A breathing gas circuit switching device

Abstract

The utility model discloses a kind of respiratory air path switching devices, comprising: breathing main pipeline;First air chamber, connected with breathing main pipeline;Second air chamber, connected with breathing main pipeline;Air supply component, between first air chamber and second air chamber are set, so that airflow enters second air chamber from first air chamber;Gas exchange chamber, connected with outside, simultaneously connected with first air chamber and second air chamber;First switch valve, set in first air chamber, for switching the gas flow direction in first air chamber;Second switch valve, set in second air chamber, for switching the gas flow direction in second air chamber.Gas exchange chamber includes air inlet chamber and exhaust chamber, air inlet chamber and exhaust chamber are communicated, and are connected with outside by pipeline, air inlet chamber is connected with first air chamber, exhaust chamber is connected with second air chamber.The problem that the existing breathing switching equipment line layout is complex, control program is also complex, inconveniently switching the air intake and air outlet of trachea is solved.

Description

Technical Field

[0001] This utility model relates to the field of airway switching technology, specifically a breathing airway switching device. Background Technology

[0002] Airway switching is used to switch between exhalation and inhalation in ventilators or expectorants. Existing airway switching mainly uses solenoid valves for control, which has a complex circuit layout and control program, making it inconvenient to switch between air intake and exhaust in the trachea. Utility Model Content

[0003] The purpose of this invention is to provide a breathing airway switching device to solve the problems of complex circuit layout and control program of existing breathing switching equipment, which makes it inconvenient to switch the air inlet and outlet of the trachea.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a breathing airway switching device, comprising:

[0005] Main breathing tube;

[0006] The first air chamber is connected to the main breathing tube;

[0007] The second air chamber is connected to the main breathing tube;

[0008] An air supply assembly is disposed between the first air chamber and the second air chamber, so that airflow enters the second air chamber from the first air chamber;

[0009] The gas exchange chamber is connected to the outside world, and also to the first and second gas chambers;

[0010] The first switching valve is located in the first gas chamber and is used to switch the gas flow direction in the first gas chamber.

[0011] The second switching valve is located in the second gas chamber and is used to switch the gas flow direction in the second gas chamber.

[0012] Preferably, the gas exchange chamber includes an intake chamber and an exhaust chamber, which are connected and connected to the outside via a pipe.

[0013] Preferably, the intake chamber is connected to the first chamber, and the exhaust chamber is connected to the second chamber.

[0014] Preferably, both the first and second air chambers include an outer cavity and an inner cavity, the two outer cavities are interconnected, the upper end of the inner cavity is connected to the main breathing tube, and the lower end of the inner cavity is connected to the inlet chamber and the outlet chamber respectively; the inner cavity is provided with a connecting air hole so that the inner cavity and the outer cavity are connected.

[0015] Preferably, both the first and second switching valves include an actuator and a valve body, wherein the valve body slides in conjunction with the inner cavity, and the actuator drives the valve body to slide along the inner cavity.

[0016] Preferably, the valve body has a tubular structure and includes an upper air hole, a middle air hole, and a lower air hole from top to bottom. A partition is provided between the upper air hole and the middle air hole. The upper air hole and the middle air hole are used to connect with a connecting air hole. The actuator drives the valve body to move and switch the air hole connected to the connecting air hole, thereby changing the gas flow direction.

[0017] Preferably, the actuator is a voice coil motor.

[0018] Preferably, the air supply component is a centrifugal fan.

[0019] Preferably, a detection port is provided on the main breathing tube.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] Smooth airflow and accurate switching: By setting up a first air chamber, a second air chamber, and an air supply component, it is ensured that the airflow smoothly enters the second air chamber from the first air chamber. At the same time, the precise control of the first and second switching valves ensures that the gas flow direction switching is accurate.

[0022] High-efficiency gas exchange: The gas exchange chamber includes an intake chamber and an exhaust chamber, which are connected to the outside world, enabling rapid gas intake and exhaust and improving gas exchange efficiency.

[0023] Compact structure and easy operation: Both the first and second air chambers employ an external and internal cavity design. The external cavities are interconnected, while the internal cavities are connected to the main breathing channel, resulting in a compact structure and easy operation. The voice coil motor, as the actuator, offers advantages in its compact structure and small size, avoiding the maintenance problems associated with complex structures.

[0024] Flexible airflow control: The valve body has a tubular structure with upper, middle, and lower air ports, separated by a partition, enabling flexible airflow control. The actuator drives the valve body to slide, easily switching the air ports connected to the connecting air ports, thereby changing the gas flow direction.

[0025] Stable fan power: Using a centrifugal fan as the air supply component provides stable and strong airflow power, ensuring the normal operation of the air circuit system.

[0026] Real-time monitoring and maintenance: The detection port on the main breathing tube can be connected to a gas concentration monitoring structure, enabling real-time monitoring of the oxygen or carbon dioxide content in the breathing gas, which facilitates timely maintenance and adjustment.

[0027] Optimized breathing process: During exhalation, the second valve rises, allowing gas to escape through a specific path; during inhalation, the first valve rises, allowing outside gas to enter the main breathing channel through a specific path. This design optimizes the breathing process, improving breathing comfort and efficiency.

[0028] In summary, this breathing airway switching device has the advantages of reasonable structure, simple operation, precise airflow control, and efficient gas exchange. It is suitable for various occasions that require breathing airway switching, such as medical ventilators and diving breathing devices, and has broad application prospects and practical value. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the exhalation structure of Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of the air intake structure in Embodiment 1 of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0032] Figure 4 This is one of the internal structural schematic diagrams of Embodiment 2 of this utility model;

[0033] Figure 5 This is the second schematic diagram of the internal structure of Embodiment 2 of this utility model;

[0034] Figure 6 This is a schematic diagram of the valve body structure of this utility model;

[0035] Figure 7 This is a schematic diagram of the exhalation structure in Embodiment 2 of this utility model;

[0036] Figure 8 This is a schematic diagram of the air intake structure in Embodiment 2 of this utility model.

[0037] Reference numerals: 1. Main breathing pipe; 2. First air chamber; 231. Outer cavity; 232. Inner cavity; 233. Connecting air port; 3. Second air chamber; 4. Air supply assembly; 5. Gas exchange chamber; 52. Inlet chamber; 51. Exhaust chamber; 6. First switching valve; 671. Actuator; 672. Valve body; 673. Upper air port; 674. Middle air port; 675. Lower air port; 676. Baffle plate; 7. Second switching valve. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] 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.

[0042] Example 1

[0043] like Figure 1 and Figure 2 As shown, the breathing airway switching device of this embodiment includes:

[0044] Main breathing tube 1;

[0045] The first air chamber 2 is connected to the main breathing tube 1;

[0046] The second air chamber 3 is connected to the main breathing tube 1;

[0047] The air supply assembly 4 is disposed between the first air chamber 2 and the second air chamber 3, so that the airflow enters the second air chamber 3 from the first air chamber 2;

[0048] Gas exchange chamber 5 is connected to the outside world, and is also connected to the first gas chamber 2 and the second gas chamber 3;

[0049] The first switching valve 6 is disposed in the first gas chamber 2 and is used to switch the gas flow direction in the first gas chamber 2;

[0050] The second switching valve 7 is located in the second gas chamber 3 and is used to switch the gas flow direction in the second gas chamber 3.

[0051] The arrows in the diagram indicate the airflow direction. During exhalation, gas enters the first air chamber 2 from the main breathing duct 1, then enters the second air chamber 3 under the action of the air supply assembly 4, and is then discharged from the gas exchange chamber 5. During inhalation, gas enters the first air chamber 2 from the gas exchange chamber 5, then is sent to the second air chamber 3 via the air supply assembly 4, and is discharged from the second air chamber 3 back into the main breathing duct 1.

[0052] Example 2

[0053] like Figures 3 to 6 As shown, the gas exchange chamber 5 includes an inlet chamber 52 and an exhaust chamber 51, which are connected and connected to the outside through a pipe.

[0054] The intake chamber 52 is connected to the first chamber 2, and the exhaust chamber 51 is connected to the second chamber 3.

[0055] The first air chamber 2 and the second air chamber 3 each include an outer cavity 231 and an inner cavity 232. The two outer cavities 231 are interconnected. The upper end of the inner cavity 232 is connected to the main breathing pipe 1, and the lower end of the inner cavity 232 is connected to the inlet chamber 52 and the exhaust chamber 51, respectively. A connecting air hole 233 is provided on the inner cavity 232 so that the inner cavity 232 and the outer cavity 231 are connected.

[0056] Both the first switching valve 6 and the second switching valve 7 include an actuator 671 and a valve body 672. The valve body 672 is slidably engaged with the inner cavity 232, and the actuator 671 drives the valve body 672 to slide along the inner cavity 232.

[0057] The valve body 672 has a tubular structure and includes an upper air hole 673, a middle air hole 674 and a lower air hole 675 from top to bottom. A partition 676 is provided between the upper air hole 673 and the middle air hole 674. The upper air hole 673 and the middle air hole 674 are used to connect to the connecting air hole 233. The actuator 671 drives the valve body 672 to switch the air hole connected to the connecting air hole 233, thereby changing the gas flow direction.

[0058] Actuator 671 is a voice coil motor. Voice coil motors have the advantages of compact structure and small size, effectively avoiding the need for regular maintenance of lead screw structures.

[0059] The air supply component 4 is a centrifugal fan.

[0060] A detection port 11 is provided on the main breathing tube 1. The detection port 11 can be connected to a gas concentration detection structure to detect the gas content (usually oxygen or carbon dioxide) in the breathing gas.

[0061] like Figure 7The diagram illustrates the exhalation process. During this process, the actuator 671 of the second switching valve 7 lifts the valve body 672, while the first switching valve 6 does not lift. The inner cavity 232 of the second air chamber 3 is not connected to the inlet chamber 52. The main breathing pipe 1 is connected to the user's pipe. Exhaled gas enters the main breathing pipe 1 and then enters the inner cavity 232 of the second air chamber 3. Due to the restriction of the partition 676, the gas in the inner cavity 232 enters the connecting air hole 233 through the upper air hole 673 and then enters the outer cavity 231. It is then transmitted from the air supply assembly 4 to the outer cavity 231 of the first air chamber 2, enters the connecting air hole 233 through the middle air hole 674, and enters the inner cavity 232. Blocked by the partition 676, the gas flows downward through the lower air hole 675 to the exhaust chamber 51 and is discharged from the outlet, completing the exhalation.

[0062] like Figure 8 The diagram shows a gas inhalation process. During this process, the actuator 671 of the first switching valve 6 lifts the valve body 672, while the second switching valve 7 does not lift. The inner cavity 232 of the second air chamber 3 is connected to the inlet chamber 52, while the inner cavity of the first air chamber 2 is not connected to the exhaust chamber 51. The main breathing pipe 1 is connected to the user's pipe. External gas enters the inlet chamber 52, enters the valve body 672 through the lower air hole 675, passes through the valve body 672, and is discharged to the outer cavity 231 through the middle air hole 674 and the connecting air hole 233. Under the operation of the air supply assembly 4, the gas enters the first air chamber 2, and enters the upper air hole 673 through the connecting air hole 233 from the outer cavity 231. Due to the restriction of the partition 676, the gas is then discharged upward to the main breathing pipe 1, completing the inhalation.

[0063] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A breathing airway switching device, characterized in that, include: Main breathing tube (1); The first air chamber (2) is connected to the main breathing tube (1); The second air chamber (3) is connected to the main breathing tube (1); An air supply assembly (4) is disposed between the first air chamber (2) and the second air chamber (3), so that airflow enters the second air chamber (3) from the first air chamber (2); The gas exchange chamber (5) is connected to the outside world and also to the first gas chamber (2) and the second gas chamber (3); The first switching valve (6) is located in the first gas chamber (2) and is used to switch the gas flow direction in the first gas chamber (2); The second switching valve (7) is located in the second gas chamber (3) and is used to switch the gas flow direction in the second gas chamber (3).

2. The breathing pathway switching device according to claim 1, characterized in that: The gas exchange chamber (5) includes an intake chamber (52) and an exhaust chamber (51), which are connected and connected to the outside through a pipe.

3. The breathing pathway switching device according to claim 2, characterized in that: The intake chamber (52) is connected to the first chamber (2), and the exhaust chamber (51) is connected to the second chamber (3).

4. The breathing pathway switching device according to claim 3, characterized in that: The first air chamber (2) and the second air chamber (3) each include an outer cavity (231) and an inner cavity (232). The two outer cavities (231) are interconnected. The upper end of the inner cavity (232) is connected to the main breathing pipe (1), and the lower end of the inner cavity (232) is connected to the inlet chamber (52) and the exhaust chamber (51) respectively. A connecting air hole (233) is provided on the inner cavity (232) so that the inner cavity (232) and the outer cavity (231) are connected.

5. The breathing pathway switching device according to claim 4, characterized in that: The first switching valve (6) and the second switching valve (7) both include an actuator (671) and a valve body (672). The valve body (672) is slidably engaged with the inner cavity (232). The actuator (671) drives the valve body (672) to slide along the inner cavity (232).

6. The breathing pathway switching device according to claim 5, characterized in that: The valve body (672) has a tubular structure and includes an upper air hole (673), a middle air hole (674) and a lower air hole (675) from top to bottom. A partition (676) is provided between the upper air hole (673) and the middle air hole (674). The upper air hole (673) and the middle air hole (674) are used to connect with the connecting air hole (233). The actuator (671) drives the valve body (672) to move and switch the air hole connected to the connecting air hole (233), thereby changing the gas flow direction.

7. The breathing pathway switching device according to claim 6, characterized in that: The actuator (671) is a voice coil motor.

8. The breathing pathway switching device according to claim 1, characterized in that: The air supply component (4) is a centrifugal fan.

9. The breathing pathway switching device according to claim 1, characterized in that: The main breathing tube (1) is equipped with a detection port (11).

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