An oxygen usage metering device

Abstract

The utility model relates to the field of oxygen flowmeter, specifically disclose a kind of oxygen usage measurement device, including gas flowmeter and the timing module being set at its air inlet. The timing module contains middle connection short pipe and the integrated casing fixed to the outside of short pipe. Shell is equipped with the fan blade in the form of fixed-point shaft connection, the encoder of detecting the rotation of fan blade, controller, battery and the micro display screen of display gas supply time. The middle connection short pipe wall is equipped with the hole for avoiding, for fan blade enters, fan blade continuously rotates under the airflow thrust. The table can automatically detect airflow start and stop and automatically timing, real-time display oxygen supply time, effectively improve the accuracy and transparency of oxygen inhalation billing, reduce doctor-patient disputes, and installation is convenient, reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of oxygen flow meters, specifically to an oxygen consumption metering device. Background Technology

[0002] Currently, oxygen flow meters are widely used devices in the field of medical oxygen inhalation therapy, used to adjust and display oxygen delivery flow. However, in practical applications, especially when it comes to medical expense settlement, the method of measuring the duration of oxygen inhalation for patients is often controversial. Most medical institutions still rely on medical staff to manually record or estimate oxygen inhalation time, which is not only inefficient but also prone to human error.

[0003] This traditional method of timekeeping has led to numerous problems. Due to the lack of precise and objective timing methods, patients and their families often question the accuracy of billing for oxygen therapy duration, causing medical disputes and damaging the transparency and trust in healthcare services. Furthermore, inaccurate timing can also affect the refined management and efficient use of medical resources. Utility Model Content

[0004] The purpose of this invention is to provide an oxygen consumption metering device to solve the problem of inaccurate timing in existing oxygen inhalation charging methods.

[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0006] An oxygen consumption metering device, characterized in that it includes a gas flow meter for measuring oxygen flow rate and a timing module for recording the ventilation duration of the gas flow meter.

[0007] The timing module includes:

[0008] A middle connecting short pipe is provided, with its two ends connected to the air inlet of the gas flow meter and the gas source, respectively. An airflow passage is formed between the two ends of the middle connecting short pipe along its axial direction. A clearance hole is provided on the pipe wall of the middle connecting short pipe to extend a certain length along its axial direction.

[0009] An integrated housing fixedly mounted on the outside of the central connecting short pipe;

[0010] The fan blade is fixedly mounted inside the integrated housing, and a portion of the fan blade is disposed in the airflow passage inside the central connecting short pipe through the clearance hole;

[0011] An encoder, wherein the encoder is disposed inside an integrated housing and is coupled to the rotational motion of the fan blades;

[0012] The controller is housed inside the integrated housing and is electrically connected to the encoder;

[0013] The battery is housed inside the integrated housing and is electrically connected to the controller.

[0014] A miniature display screen is mounted on the outer wall of the integrated housing, and the miniature display screen is electrically connected to the controller.

[0015] Furthermore, a horizontally extending positioning flat tube is formed at the clearance hole of the intermediate short tube, the fan blade is disposed inside the positioning flat tube, and miniature bearings for connecting the upper and lower shaft ends of the fan blade are formed on both the upper and lower sides of the positioning flat tube. A contoured slot for stable insertion of the positioning flat tube is formed on the integrated housing, and a sealing strip for sealing the open opening of the positioning flat tube is affixed to the groove wall of the contoured slot.

[0016] Furthermore, the encoder is a rotary encoder, and the shaft end of the fan blade corresponding to the position of the encoder is plugged into the rotation detection hole of the rotary encoder.

[0017] Furthermore, the encoder is a photoelectric reflective encoder, and a grid hole encoder disk is fixedly provided on the shaft end corresponding to the position of the encoder on the fan blade.

[0018] Furthermore, the integrated housing has a battery slot formed therein for installing a battery, and electrode plates are provided on the top and bottom walls of the battery slot. Each electrode plate is connected to a wire for connecting to a controller, and the integrated housing has a wire groove formed therein for guiding the wire to the location of the controller.

[0019] Furthermore, a detachable locking end plate is fixedly provided on one side of the integrated housing. The side of the integrated housing that is attached to the locking end plate is formed with a U-shaped through groove for holding the intermediate short pipe. After the locking end plate is fixedly connected to the integrated housing, it presses the intermediate short pipe into the U-shaped through groove.

[0020] Furthermore, one end of the intermediate short pipe is formed with a connector for connecting the air inlet of the oxygen flow meter, and the other end is formed with a socket for connecting the oxygen delivery pipe connector.

[0021] The beneficial effects of this invention are as follows: This invention provides an oxygen consumption metering device. By setting a timing module at the inlet of the oxygen flow meter, and utilizing the continuous rotation of the fan blades under the action of airflow, combined with encoder detection, it can automatically capture the start and stop of the oxygen flow and display the oxygen supply duration in real time. This completely solves the problems of inaccurate traditional manual timing and the potential for medical disputes, significantly improving the transparency and accuracy of oxygen inhalation billing. Attached Figure Description

[0022] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the timing module of this utility model;

[0025] Figure 3 This is a plan view of the timing module of this utility model;

[0026] Figure 4 for Figure 3 A sectional view along line AA in the middle;

[0027] Figure 5 for Figure 3 Plan sectional view along line BB;

[0028] Figure 6 This is an exploded three-dimensional structural diagram of the timing module of this utility model;

[0029] The labels in the diagram represent the following: 1-Oxygen flow meter; 2-Timing module; 3-Intermediate short pipe; 4-Integrated housing; 5-Fan blade; 6-Battery; 7-Miniature display screen; 8-Allowing hole; 9-Positioning flat tube; 10-Miniature bearing; 11-Contouring slot; 12-Sealing strip; 13-Grid hole encoder disk; 14-Photoelectric reflective encoder; 15-Electrode plate; 16-Wire; 17-Wire groove; 18-Locking end plate; 19-U-shaped through groove; 20-Connector; 21-Socket. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1 to 6As shown, an oxygen consumption metering device of the present invention includes a standard gas flow meter 1 (e.g., a common glass rotor flow meter) and an innovatively designed timing module. The timing module is ingeniously positioned at the inlet of the gas flow meter 1, serving as the upstream interface of the flow meter to achieve airflow detection and duration recording. The timing module mainly consists of a central connecting pipe 3 and an integrated housing 4 fixed to the outside of the central connecting pipe 3. The central connecting pipe 3 is a straight-through pipe with an inner diameter matching the oxygen delivery pipe diameter (e.g., 5-6 mm), ensuring smooth airflow. Its pipe wall is specially provided with a clearance hole 8 for the fan blade 5 to enter, allowing the blade portion or the entire fan blade 5 structure to extend into the airflow channel, thereby being effectively propelled by the flowing oxygen. The integrated housing 4 is compactly mounted outside the central connecting pipe 3, and integrates all the core electronic components and mechanical parts of the timing module internally. The integrated housing 4 includes a fan blade 5 positioned in a fixed-point axial connection, an encoder for detecting the rotation of the fan blade 5, a controller (e.g., a microcontroller unit MCU) serving as the system's "brain," a battery 6 providing power, and a miniature display screen 7 for visually displaying the duration of air supply. The fan blade 5 is cleverly positioned within an clearance hole 8, allowing it to be completely submerged in the airflow passing through the central connecting pipe 3. The fan blade 5 is designed to be extremely lightweight, ensuring continuous rotation even under the thrust of low-flow oxygen (e.g., 1-2 L / min). When the oxygen flow ceases, the fan blade 5 will stop rotating due to loss of thrust or become irregularly oscillating, thus providing a clear indication of the presence or absence of airflow.

[0032] The controller is the core of intelligent timing. It is programmed to activate the timing function only when a continuous rotation signal from the fan blades is detected; timing stops when the fan blades stop rotating or the rotation signal is interrupted. Specifically, the controller continuously monitors the pulse signal output by the encoder, using a preset time window and pulse frequency threshold (e.g., detecting at least X pulses within N milliseconds) to determine whether the fan blades are in a "continuous rotation" state driven by stable airflow. If the fan blades oscillate irregularly instead of rotating continuously due to external disturbances or shaking, the controller will not trigger timing, effectively avoiding mistimekeeping and ensuring accuracy.

[0033] To achieve extended battery life, the controller also features an automatic sleep mode. When no continuous fan blade rotation signal is detected (i.e., no oxygen flow or in standby mode), the controller automatically enters a low-power sleep mode, periodically waking up with extremely low power consumption to check the fan blade status. When a continuous fan blade rotation signal is detected (i.e., oxygen flow begins), the controller immediately wakes up from sleep mode, fully activating and starting the timing function. This intelligent power management significantly extends battery life.

[0034] To ensure stable rotation of the fan blade 5, extremely low bearing friction, and detector reliability, this embodiment optimizes the connection method between the intermediate short tube 3 and the integrated housing 4. A horizontally extending positioning flat tube 9 is formed at the clearance hole 8 of the intermediate short tube 3. This positioning flat tube 9, as a precision structural extension, primarily facilitates the installation of the fan blade 5, as the shaft end of the fan blade 5 is not easily installed directly inside the intermediate short tube 3 or the clearance hole 8. The rotation axis of the fan blade 5 passes through this positioning flat tube 9, so that the blade portion of the fan blade 5 body is located at the clearance hole 8 inside the intermediate short tube 3, while the support point of its rotation axis is led out into the positioning flat tube 9. The fan blade 5 body is disposed within the positioning flat tube 9, and the upper and lower shaft ends of the fan blade 5 are precisely connected to the upper and lower sidewalls of the positioning flat tube 9. Specifically, miniature bearings 10 are formed on both the upper and lower sides of the positioning flat tube 9 for connecting the upper and lower shaft ends of the fan blade 5. These bearings are made of low-friction, high-wear-resistant materials, such as precision miniature ball bearings or artificial jewel bearings, ensuring that the fan blades 5 rotate freely with extremely low resistance. The integrated housing 4 has an internal contoured slot 11 that matches the shape of the positioning flat tube 9, allowing for stable insertion and positioning of the tube. This slot design ensures precise alignment between the axis of the fan blades 5 and the encoder's detection axis. To ensure airtightness, a sealing strip 12 is affixed to the wall of the contoured slot 11 to seal the open end of the positioning flat tube 9. The sealing strip 12 is made of medical-grade silicone or EPDM to ensure airtightness, prevent oxygen leakage, and prevent external contaminants from entering.

[0035] This timing module uses a rotary encoder to detect the rotation of the fan blade 5. Different encoder types can be selected based on actual application requirements and cost considerations. In one embodiment, the encoder is a rotary encoder. This rotary encoder has a rotation detection hole for receiving rotational input. The shaft end of the fan blade 5, corresponding to the encoder position, is directly inserted into the rotation detection hole. The rotation of the fan blade 5 directly drives the rotation detection component inside the encoder, eliminating the need for an additional coupling, thus ensuring structural compactness and transmission efficiency. As a more preferred embodiment, the encoder is a photoelectric reflective encoder 14. This encoder detects rotation non-contactly through optical means, thereby minimizing mechanical friction resistance. In this scheme, a grid-hole encoder disk 13 is fixedly installed on the shaft end of the fan blade 5 corresponding to the encoder position (e.g., the end of the fan blade 5 shaft). The surface of this encoder disk is carefully designed with reflective and non-reflective areas (or gratings). When the fan blade 5 and the encoder disk rotate with the airflow, the light emitted by the light-emitting element (such as an LED) inside the encoder is selectively reflected back to the photosensitive receiving element (such as a photodiode) by these areas. By detecting changes in the reflected light signal, the encoder can accurately determine the rotation and speed of fan blade 5. Because it is a non-contact detection method, this approach allows fan blade 5 to rotate freely with almost zero resistance, thereby maximizing its sensitivity to weak airflow.

[0036] To enable the timing module to operate independently, its internal power supply and circuit layout have been meticulously designed. A battery slot for mounting the battery 6 is formed within the integrated housing 4. The battery slot's dimensions precisely match the selected button cell battery 6 (e.g., CR2032 type), ensuring a secure installation. Electrode plates 15 are provided on both the top and bottom walls of the battery slot, contacting the two poles of the battery 6 to draw current. Each electrode plate 15 is connected to a wire 16 for connecting to the controller. To facilitate internal wiring and ensure circuit safety, a wire groove 17 is formed within the integrated housing 4 to guide the wire 16 to the controller. The wire groove 17 effectively secures the wire 16, preventing loosening or interference with other components, ensuring circuit stability and reliability.

[0037] To ensure the timing module is securely fixed to the intermediate short tube 3 and facilitates assembly and maintenance, this embodiment incorporates a detachable locking mechanism. A detachable locking end plate 18 is fixedly mounted on one side of the integrated housing 4. This locking end plate 18 is connected to the integrated housing 4 via screws or clips, allowing for disassembly when needed for battery 6 replacement or maintenance. A U-shaped through groove 19 for gripping the intermediate short tube 3 is formed on the side of the integrated housing 4 that fits against the locking end plate 18. When the locking end plate 18 is fixedly connected to the integrated housing 4 via screws or other fasteners, the intermediate short tube 3 is tightly pressed into the U-shaped through groove 19. This gripping design ensures a stable connection between the integrated housing 4 and the intermediate short tube 3, preventing the module from loosening or falling off during use.

[0038] The intermediate connecting pipe 3 serves as the carrier pipe for the timing module, and its two ends are designed with interfaces for connecting to other components. One end of the intermediate connecting pipe 3 is formed with a connector 20 for connecting to the air inlet of the gas flow meter 1. This connector 20 can be a threaded connector 20 (e.g., matching the thread specification of the flow meter's air inlet), or it can be other forms of quick-connect or snap-fit ​​connector 20, ensuring a tight, leak-free connection with the gas flow meter 1. The other end of the intermediate connecting pipe 3 is formed with a socket 21 for connecting an oxygen delivery pipe connector. This socket 21 is typically a pagoda-shaped structure, with an inner diameter (e.g., 5-6 mm) matching the inner diameter of a standard oxygen delivery pipe, so that the flexible hose of the oxygen delivery pipe (or the output pipe of the oxygen supply equipment) can be directly inserted, achieving a convenient and reliable airtight connection.

[0039] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. An oxygen usage metering device, characterized by, It includes a gas flow meter (1) for measuring oxygen flow and a timing module (2) for recording the ventilation duration of the gas flow meter (1). The timing module (2) includes: The middle connecting short pipe (3) is connected to the air inlet of the gas flow meter (1) and the gas source at both ends respectively. An airflow passage is formed between the two ends of the middle connecting short pipe (3) along its axial direction. An avoidance hole (8) extending a certain length along its axial direction is opened on the pipe wall of the middle connecting short pipe (3). An integrated housing (4) is fixedly installed on the outside of the middle connecting short pipe (3); Fan blade (5), the fan blade (5) is set in the interior of the integrated housing (4) in a fixed-point shaft connection state, and a part of the fan blade (5) is set in the airflow passage inside the middle connecting short pipe (3) through the clearance hole (8); The encoder is disposed inside the integrated housing (4) and is coupled to the rotational motion of the fan blade (5); The controller is located inside the integrated housing (4) and is electrically connected to the encoder; A battery (6) is disposed inside an integrated housing (4) and is electrically connected to the controller; A micro display screen (7) is disposed on the outer wall of the integrated housing (4), and the micro display screen (7) is electrically connected to the controller.

2. The oxygen usage metering device of claim 1, wherein A horizontally extending positioning flat tube (9) is formed at the clearance hole (8) of the intermediate short tube (3). The fan blade (5) is disposed inside the positioning flat tube (9). Miniature bearings (10) for connecting the upper and lower shaft ends of the fan blade (5) are formed on both the upper and lower sides of the positioning flat tube (9). A contoured slot (11) for the stable insertion of the positioning flat tube (9) is formed on the integrated housing (4). A sealing strip (12) for sealing the open opening of the positioning flat tube (9) is attached to the groove wall of the contoured slot (11).

3. The oxygen usage metering device of claim 1, wherein The encoder is a rotary encoder, and the shaft end of the fan blade (5) corresponding to the position of the encoder is connected to the rotation detection hole of the rotary encoder.

4. The oxygen usage metering device of claim 1, wherein The encoder is a photoelectric reflective encoder (14), and a grid hole encoder disk (13) is fixedly provided on the shaft end of the fan blade (5) corresponding to the position of the encoder.

5. The oxygen usage metering device of claim 1, wherein The integrated housing (4) has a battery slot for installing a battery (6) inside. Electrode plates (15) are provided on the top and bottom walls of the battery slot. Each electrode plate (15) is connected to a wire (16) for connecting to the controller. The integrated housing (4) has a wire slot (17) for guiding the wire (16) to the location of the controller.

6. The oxygen usage metering device of claim 1, wherein A detachable locking end plate (18) is fixedly provided on one side of the integrated housing (4). The integrated housing (4) is fitted with a U-shaped through groove (19) on one side of the locking end plate (18) for holding the intermediate short pipe (3). After the locking end plate (18) is fixedly connected to the integrated housing (4), the intermediate short pipe (3) is pressed into the U-shaped through groove (19).

7. The oxygen usage metering device of claim 1, wherein One end of the intermediate short pipe (3) is formed with a connecting head (20) for connecting the gas inlet hole of the gas flow meter (1), and the other end is formed with a jack (21) for connecting the oxygen supply pipe joint.

8. The oxygen usage metering device of claim 1, wherein, The battery (6) is a CR2032 button battery (6).

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