Carbon dioxide absorber with automatic replacement alarm function

Abstract

The utility model relates to the technical field of carbon dioxide absorbers, in particular to a carbon dioxide absorber with an automatic replacement alarm function. In the working process of the carbon dioxide absorber, an absorbent is loaded in the absorber body assembly. Air flow enters the absorber body assembly through the air inlet and passes through the absorbent, the absorbent absorbs carbon dioxide in the air flow, and then the air flow is discharged from the air outlet. After the absorbent absorbs carbon dioxide, corresponding parameters of the absorbent body assembly change, parameter data of the absorber body are detected through the detection module, after the control module receives the parameter data from the detection module, a control instruction is sent to the indication module according to the parameter data, and the indication module carries out change indication according to the control instruction. Therefore, a worker can more accurately and quickly judge whether the carbon dioxide absorber needs to be replaced or not, and the convenience and accuracy of judgment of replacement of the carbon dioxide absorber are improved.

Description

Technical Field

[0001] This application relates to the field of tracheotomy and intubation technology, and in particular to a carbon dioxide absorber with an automatic replacement alarm function. Background Technology

[0002] Carbon dioxide absorbers are commonly used in the circulatory absorption system of anesthesia machines to help absorb carbon dioxide and other acidic gases, ensuring the patient's respiratory safety. During operation, the patient's exhaled air enters a closed circuit, passes through the absorber, and then enters the inspiratory pathway for the patient to inhale.

[0003] During operation, the absorbent inside the carbon dioxide absorber reacts chemically with the carbon dioxide in the airflow, absorbing the carbon dioxide. The absorbent is gradually consumed as the amount of carbon dioxide absorbed increases. Once the absorbent reaches saturation, the carbon dioxide absorber needs to be replaced.

[0004] To determine when a carbon dioxide absorber needs replacement, an indicator is usually mixed into the absorbent. The product of the reaction between the absorbent and carbon dioxide causes the indicator to change color. When most of the absorbent has changed color, it's determined that the absorber needs replacement. However, observing the color change requires staff to be in a designated location, which is inconvenient. Furthermore, even if a color change is observed, only the surface color is visible, not the internal color changes. This makes it difficult to accurately determine if the absorbent has reached saturation, leading to premature replacement and wasted absorbent. Similarly, a timed replacement system can also result in inaccurate timing, wasting absorbent or causing excessively high carbon dioxide concentrations in the patient's breathing.

[0005] It is evident that improving the convenience and accuracy of determining when to replace a carbon dioxide absorber is a pressing technical issue that needs to be addressed. Utility Model Content

[0006] This application provides a carbon dioxide absorber with an automatic replacement alarm function, aiming to solve the technical problem of how to improve the convenience and accuracy of judging the replacement of carbon dioxide absorbers in the prior art.

[0007] This application provides a carbon dioxide absorber with an automatic replacement alarm function, comprising:

[0008] An absorber body assembly for loading absorbent, the absorber body assembly being provided with an air inlet and an air outlet;

[0009] A detection module is used to detect parameter data of the absorber body assembly after the absorbent absorbs carbon dioxide from the gas stream.

[0010] Indicator module;

[0011] The control module is configured to receive the parameter data and then send a control command to the indication module based on the parameter data.

[0012] The indicator module provides change indications based on the control commands.

[0013] Optionally, the absorber body assembly includes:

[0014] A loading assembly for loading the absorbent, wherein both the air inlet and the air outlet are disposed on the loading assembly;

[0015] An installation component is used to connect the loading component to an external structure, and the loading component is slidably mounted on the installation component.

[0016] The detection module includes a gravity sensor, which is fixedly installed on the mounting assembly and electrically connected to the control module. The gravity sensor is used to detect the weight of the absorbent after the loading assembly has loaded it.

[0017] Optionally, the installation components include:

[0018] A housing assembly, wherein the loading assembly is movably mounted within the housing assembly, and the direction of movement of the loading assembly is configured to be along the direction of gravity of the loading assembly;

[0019] A guide assembly is mounted on the inner sidewall of the housing assembly and is used to guide the loading assembly during movement of the loading assembly relative to the housing assembly.

[0020] Optionally, the air inlet is connected to the outside through an air inlet pipe, and the air outlet is connected to the outside through an air outlet pipe;

[0021] Both the air inlet pipe and the air outlet pipe are fixedly connected to the mounting assembly.

[0022] At least one of a first bellows or a first spring tube is provided between the fixed connection between the air intake pipe and the mounting assembly and the connection between the air intake pipe and the loading assembly.

[0023] At least one of a second corrugated pipe or a second spring pipe is provided between the fixed connection between the vent pipe and the mounting assembly and the connection between the vent pipe and the loading assembly.

[0024] Optionally, the gravity sensor is disposed at the bottom of the loading assembly, and the gravity sensor supports the loading assembly;

[0025] The mounting component is fixedly mounted with a limiting member, which is located on top of the loading component and is used to limit the loading component.

[0026] Optionally, the air inlet is provided with a first sensor, and the air outlet is provided with a second sensor. Both the first sensor and the second sensor are used to detect the carbon dioxide concentration in the airflow, and both the first sensor and the second sensor are electrically connected to the control module.

[0027] Optionally, the indicator module includes a display indicator component, and the display state of the display indicator component changes after the indicator module receives the control command.

[0028] Optionally, the indicator module includes a sound indicator component, and the sound output state of the sound indicator component changes after the indicator module receives the control command.

[0029] The beneficial effects achieved by this application are as follows: During the operation of the carbon dioxide absorber, the absorber body assembly is filled with absorbent, which absorbs carbon dioxide from the airflow. The airflow enters the absorber body assembly through the inlet, passes through the absorbent, which absorbs the carbon dioxide in the airflow, and then the airflow is discharged from the outlet. After the absorbent absorbs carbon dioxide, the corresponding parameters of the absorbent body assembly change. The detection module detects the parameter data of the absorber body assembly, and after receiving the parameter data from the detection module, the control module sends a control command to the indicator module based on the parameter data. The indicator module then changes its indication according to the control command. Operators can then determine whether the carbon dioxide absorber needs to be replaced based on the changes indicated by the indicator module. This allows operators to more accurately and quickly determine whether the carbon dioxide absorber needs to be replaced, improving the convenience and accuracy of the replacement decision. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the carbon dioxide absorber in an embodiment of this utility model;

[0031] Figure 2 This is a schematic diagram of the control structure module of the carbon dioxide absorber in an embodiment of this utility model.

[0032] Explanation of main unit symbols:

[0033] 10. Carbon dioxide absorber; 20. Absorber body assembly; 21. Loading assembly; 211. Air inlet; 212. Air inlet pipe; 213. First bellows; 214. Air outlet; 215. Air outlet pipe; 216. Second bellows; 22. Mounting assembly; 221. Housing assembly; 222. Guide assembly; 23. Limiting component; 30. Detection module; 31. Gravity sensor; 32. First sensor; 33. Second sensor; 40. Indicating module; 50. Control module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two units or the interaction between two units. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] Please see Figures 1 to 2 In some embodiments of this application, a carbon dioxide absorber 10 with an automatic replacement alarm function is provided, including: an absorber body assembly 20, a detection module 30, an indicator module 40, and a control module 50. The absorber body assembly 20 is used to load the absorbent, and is provided with an air inlet 211 and an air outlet 214. The detection module 30 is used to detect parameter data of the absorber body assembly 20 after the absorbent absorbs carbon dioxide from the gas stream. The control module 50 is configured to receive the parameter data and then send control commands to the indicator module 40 based on the parameter data. The indicator module 40 provides change indications according to the control commands.

[0041] During the operation of the carbon dioxide absorber 10, the absorber body assembly 20 contains an absorbent used to absorb carbon dioxide from the airflow. The airflow enters the absorber body assembly 20 through the inlet 211, passes through the absorbent, which absorbs the carbon dioxide in the airflow, and then the airflow exits from the outlet 214. After the absorbent absorbs carbon dioxide, the corresponding parameters of the absorbent body assembly change. The detection module 30 detects the parameter data of the absorber body assembly. Upon receiving the parameter data from the detection module 30, the control module 50 sends a control command to the indication module 40 based on the parameter data. The indication module 40 then adjusts the indicator according to the control command. Operators can then determine whether the carbon dioxide absorber 10 needs to be replaced based on the changes indicated by the indication module 40. This allows operators to more accurately and quickly determine whether the carbon dioxide absorber 10 needs replacement, improving the convenience and accuracy of the replacement decision.

[0042] In some embodiments of this application, the absorber body assembly 20 includes a loading assembly 21 and a mounting assembly 22. The loading assembly 21 is used to load the absorbent, and both an air inlet 211 and an air outlet 214 are disposed on the loading assembly 21. The mounting assembly 22 is used to connect the loading assembly 21 to an external structure, and the loading assembly 21 is slidably mounted on the mounting assembly 22. The detection module 30 includes a gravity sensor 31, which is fixedly mounted on the mounting assembly 22. The gravity sensor 31 is electrically connected to the control module 50 and is used to detect the weight of the loading assembly 21 after loading the absorbent.

[0043] After the absorbent absorbs carbon dioxide, its weight increases. The weight change of the loading assembly 21 and the absorbent after the absorbent absorbs carbon dioxide is detected by gravity sensor 31, thereby determining the amount of carbon dioxide absorbed by the absorbent and whether the absorbent has reached saturation.

[0044] Gravity sensor 31 is fixedly mounted to mounting assembly 22 and positioned at the bottom of loading assembly 21. By sliding loading assembly 21 onto mounting assembly 22, gravity sensor 31 can detect the total weight of loading assembly 21 and the absorbent inside loading assembly 21.

[0045] After the airflow enters the absorber body assembly 20, it enters the loading assembly 21 through the air inlet 211 and then exits the loading assembly 21 through the air outlet 214. During the airflow's passage through the loading assembly 21, the airflow comes into contact with the absorbent inside the loading assembly 21, thereby absorbing carbon dioxide from the airflow. After absorbing carbon dioxide, the absorbent's weight increases, causing a change in the weight data detected by the gravity sensor 31. The control module 50 then sends a control command to the indication module 40 based on the received weight data from the gravity sensor 31. The indication module 40 then adjusts the indicator according to the control command. Operators can then determine whether the carbon dioxide absorber 10 needs to be replaced based on the changes indicated by the indication module 40. This allows operators to more accurately and quickly determine whether the carbon dioxide absorber 10 needs replacement, improving the convenience and accuracy of the replacement decision.

[0046] In some embodiments of this application, the absorbent includes calcium hydroxide.

[0047] The main chemical reaction during the absorption of carbon dioxide by the absorbent is CO2 + Ca(OH)2 ═ CaCO3 + H2O.

[0048] Based on stoichiometry, we can calculate the mass relationships of the substances in the reaction:

[0049] 1. Mass of carbon dioxide (CO2):

[0050] Molecular weight: CO2 = 44.01 g / mol; 1 mol of CO2 participates in the reaction, therefore, the mass of carbon dioxide is 44.019 g / mol.

[0051] 2. Mass of calcium hydroxide (Ca(OH)2):

[0052] Molecular weight: Ca(OH)2 = 74.10 g / mol; 1 mol of Ca(OH)2 participates in the reaction, therefore, the mass of calcium hydroxide is 74.109 g / mol.

[0053] 3. Mass of calcium carbonate (CaCO3):

[0054] Molecular weight: CaCO3 = 100.09 g / mol; 1 mol of CaCO3 is produced in the reaction, therefore, the mass of calcium carbonate is 100.09 g;

[0055] 4. Mass of water (H2O):

[0056] Molecular weight: H2O = 18.02 g / mol; 1 mol of H2O is produced in the reaction, therefore, the mass of water is 18.02 g.

[0057] Since the absorbent is loaded within the loading assembly 21, and no gas is produced during the reaction of carbon dioxide and calcium hydroxide, the weight increase of the absorbent is simply the weight of the carbon dioxide. Based on the chemical reaction formula and the mass relationships of the substances in the reaction, if the absorbent contains only calcium hydroxide, and the carbon dioxide in the gas stream reacts fully with the calcium hydroxide in the absorbent, the percentage increase in the absorbent's weight is approximately 59%.

[0058] Since the absorbent contains other substances besides calcium hydroxide, and not all the carbon dioxide in the gas stream reacts with the calcium hydroxide in the absorbent, the actual calculation shows that the weight percentage increase of the absorbent after absorbing carbon dioxide is 10%-18%.

[0059] If the control module 50 receives the weight data detected by the gravity sensor 31 and determines that the weight increase of the absorbent reaches 10%-18%, it sends a control command to the indicator module 40 so that the indicator module 40 indicates that the carbon dioxide absorber 10 needs to be replaced.

[0060] In some embodiments of this application, the parameter data includes initial weight data and real-time weight data. The control module 50 includes a weight threshold. The control module 50 is configured to send a control command to the indication module 40 based on at least one of a first difference between the real-time weight data and the initial weight data or a second difference between the real-time weight data and the weight threshold.

[0061] In some embodiments of this application, the control module 50 may also control the indicator module 40 to indicate different states based on the magnitude of the first difference and / or the second difference, so that staff can understand the absorption of carbon dioxide by the absorbent in a timely manner, i.e., the consumption of the absorbent.

[0062] In some embodiments of this application, the mounting assembly 22 includes a housing assembly 221 and a guide assembly 222. The loading assembly 21 is movably mounted within the housing assembly 221, and the direction of movement of the loading assembly 21 is configured along the direction of gravity of the loading assembly 21. The guide assembly 222 is mounted on the inner sidewall of the housing assembly 221 and is used to guide the loading assembly 21 during its movement relative to the housing assembly 221.

[0063] The loading assembly 21 and the gravity sensor 31 are protected by the housing assembly 221, and the loading assembly 21 is guided by the guide assembly 222, so that the loading assembly 21 slides more smoothly relative to the housing assembly 221, thereby making the values ​​detected by the gravity sensor 31 more accurate and sensitive.

[0064] In some embodiments of this application, the air inlet 211 is connected to the outside via the air inlet pipe 212, and the air outlet 214 is connected to the outside via the air outlet pipe 215. Both the air inlet pipe 212 and the air outlet pipe 215 are fixedly connected to the mounting assembly 22. At least one of a first corrugated pipe 213 or a first spring pipe is provided between the fixed connection point of the air inlet pipe 212 and the mounting assembly 22 and the connection point of the air inlet pipe 212 and the loading assembly 21. At least one of a second corrugated pipe 216 or a second spring pipe is provided between the fixed connection point of the air outlet pipe 215 and the mounting assembly 22 and the connection point of the air outlet pipe 215 and the loading assembly 21.

[0065] By setting up bellows or spring tubes, the connection between the air inlet pipe 212 and the air inlet 211, and the connection between the air outlet pipe 215 and the air outlet 214, are prevented from becoming loose due to the relative movement between the loading assembly 21 and the mounting assembly 22. This improves the reliability of the connection between the air inlet pipe 212 and the air inlet 211, and the connection between the air outlet pipe 215 and the air outlet 214, and reduces the risk of air leakage.

[0066] In some embodiments of this application, a gravity sensor 31 is disposed at the bottom of the loading assembly 21, and the gravity sensor 31 supports the loading assembly 21. A limiting member 23 is fixedly mounted on the mounting assembly 22, and the limiting member 23 is located at the top of the loading assembly 21, and the limiting member 23 is used to limit the loading assembly 21.

[0067] The limiting member 23 limits the loading assembly 21 from the top, thereby preventing excessive movement of the loading assembly 21 without affecting the detection results of the gravity sensor 31, ensuring the accuracy of the detection results of the gravity sensor 31, and also preventing air leakage caused by excessive movement of the loading assembly 21.

[0068] In some embodiments of this application, an air inlet 211 is provided with a first sensor 32 and an air outlet 214 is provided with a second sensor 33. Both the first sensor 32 and the second sensor 33 are used to detect the carbon dioxide concentration in the airflow. Both the first sensor 32 and the second sensor 33 are electrically connected to the control module 50.

[0069] In some embodiments of this application, the parameter data includes first concentration data and second concentration data. The first concentration data indicates the carbon dioxide concentration when the airflow passes through the air inlet 211, and the second concentration data indicates the carbon dioxide concentration when the airflow passes through the air outlet 214. The control module 50 includes a carbon dioxide concentration threshold. The control module 50 is configured to send a control command based on at least one of a third difference between the first concentration data and the second concentration data, or a fourth difference between the second concentration data and the carbon dioxide concentration threshold.

[0070] The first sensor 32 detects the carbon dioxide concentration when the airflow passes through the inlet 211, thus obtaining the first concentration data, which is the concentration of carbon dioxide in the airflow before it is absorbed by the absorbent. The second sensor 33 detects the carbon dioxide concentration when the airflow passes through the outlet 214, thus obtaining the second concentration data, which is the concentration of carbon dioxide in the airflow after it has been absorbed by the absorbent.

[0071] If the third difference between the first concentration data and the second concentration data is too small, it indicates that the carbon dioxide concentration in the airflow does not change much after the carbon dioxide is absorbed by the absorbent, which in turn indicates that the absorbent's ability to absorb carbon dioxide has deteriorated. If the third difference decreases to the preset threshold, it indicates that the absorbent's ability to absorb carbon dioxide is difficult to meet the expected requirements. The control module 50 then sends a control command to the indicator module 40, so that the staff can quickly understand that the carbon dioxide absorber 10 needs to be replaced.

[0072] If the fourth difference between the second concentration data and the carbon dioxide concentration threshold is too small, it indicates that the absorbent's ability to absorb carbon dioxide is close to saturation. The control module 50 then sends a control command to the indicator module 40, allowing staff to quickly understand that the carbon dioxide absorber 10 needs to be replaced.

[0073] In some embodiments of this application, the indicator module 40 includes a display indicator component, and the display state of the display indicator component changes after the indicator module 40 receives a control command.

[0074] In some embodiments of this application, changes in display state include color changes, brightness changes, shape changes, number changes, animation changes, and graphic changes.

[0075] In some embodiments of this application, the indicator module 40 includes a sound indicator component, and the sound emission state of the sound indicator component changes after the indicator module 40 receives a control command.

[0076] In some embodiments of this application, changes in the vocalization state include changes in whether or not vocalization occurs, changes in volume, changes in sound frequency, and changes in voice prompts.

[0077] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Furthermore, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A carbon dioxide absorber with an automatic replacement alarm function, characterized in that, include: An absorber body assembly for loading absorbent, the absorber body assembly being provided with an air inlet and an air outlet; A detection module is used to detect parameter data of the absorber body assembly after the absorbent absorbs carbon dioxide from the gas stream. Indicator module; The control module is configured to receive the parameter data and then send a control command to the indication module based on the parameter data. The indicator module provides change indications based on the control commands.

2. The carbon dioxide absorber with automatic replacement alarm function according to claim 1, characterized in that, The absorber body assembly includes: A loading assembly for loading the absorbent, wherein both the air inlet and the air outlet are disposed on the loading assembly; An installation component is used to connect the loading component to an external structure, and the loading component is slidably mounted on the installation component. The detection module includes a gravity sensor, which is fixedly installed on the mounting assembly and electrically connected to the control module. The gravity sensor is used to detect the weight of the absorbent after the loading assembly has loaded it.

3. The carbon dioxide absorber with automatic replacement alarm function according to claim 2, characterized in that, The installation components include: A housing assembly, wherein the loading assembly is movably mounted within the housing assembly, and the direction of movement of the loading assembly is configured to be along the direction of gravity of the loading assembly; A guide assembly is mounted on the inner sidewall of the housing assembly and is used to guide the loading assembly during movement of the loading assembly relative to the housing assembly.

4. The carbon dioxide absorber with automatic replacement alarm function according to claim 2, characterized in that, The air inlet is connected to the outside through an air inlet pipe, and the air outlet is connected to the outside through an air outlet pipe. Both the air inlet pipe and the air outlet pipe are fixedly connected to the mounting assembly. At least one of a first bellows or a first spring tube is provided between the fixed connection between the air intake pipe and the mounting assembly and the connection between the air intake pipe and the loading assembly. At least one of a second corrugated pipe or a second spring pipe is provided between the fixed connection between the vent pipe and the mounting assembly and the connection between the vent pipe and the loading assembly.

5. The carbon dioxide absorber with automatic replacement alarm function according to claim 2, characterized in that, The gravity sensor is located at the bottom of the loading assembly, and the gravity sensor supports the loading assembly; The mounting component is fixedly mounted with a limiting member, which is located on top of the loading component and is used to limit the loading component.

6. The carbon dioxide absorber with automatic replacement alarm function according to claim 1, characterized in that, The air inlet is equipped with a first sensor, and the air outlet is equipped with a second sensor. Both the first sensor and the second sensor are used to detect the carbon dioxide concentration in the airflow, and both the first sensor and the second sensor are electrically connected to the control module.

7. The carbon dioxide absorber with automatic replacement alarm function according to claim 1, characterized in that, The indicator module includes a display indicator component, and the display state of the display indicator component changes after the indicator module receives the control command.

8. The carbon dioxide absorber with automatic replacement alarm function according to claim 1, characterized in that, The indicator module includes a sound indicator component, and the sound output state of the sound indicator component changes after the indicator module receives the control command.

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