Sine airflow generator and respiratory support equipment

Abstract

The utility model discloses a sine airflow generator and respiratory support equipment, which belongs to the technical field of respiratory support equipment and comprises an air cylinder, a power component connected with the air cylinder, an output pipe connected with the air cylinder, a feedback component arranged on the output pipe and a main control board electrically connected with the feedback component. The main control board is further connected with the power assembly. The feedback assembly comprises a flow sensor which is arranged on the output pipe and used for obtaining the flow of airflow in the output pipe in real time; the main control board is used for adjusting the output power of the power assembly according to the real-time flow value fed back by the flow sensor. According to the utility model, the technical problem that a relatively large error exists between the actually output waveform airflow and the standard waveform airflow is solved, and the technical effect of reducing the error between the actually output waveform airflow and the standard waveform airflow is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of respiratory support equipment, in particular to a sinusoidal airflow generator and respiratory support equipment. Background Art

[0002] The sinusoidal airflow generator can generate a sinusoidal airflow whose flow rate changes sinusoidally over time. This device can simulate the periodic changes of airflow during a patient's breathing at a specific frequency and amplitude.

[0003] In the existing technology, a sinusoidal airflow is usually generated by the reciprocating motion of a piston in a cylinder. However, there is a large error between the actual output waveform airflow and the standard waveform airflow. When the sinusoidal airflow generator is used to test ventilators and anesthesia systems, if the output waveform does not meet the standard, the test results may be inaccurate, making it impossible to accurately evaluate the performance of the equipment. Utility Model Content

[0004] In order to solve the above problems, the first aspect of the present invention provides a sinusoidal airflow generator, comprising:

[0005] A cylinder, a power assembly connected to the cylinder, an output pipe connected to the cylinder, a feedback assembly provided on the output pipe, a main control board electrically connected to the feedback assembly, the main control board also connected to the power assembly;

[0006] The feedback component includes: a flow sensor, which is provided on the output pipe and is used to obtain the flow rate of the airflow in the output pipe in real time;

[0007] The main control board is used to adjust the output power of the power component according to the real-time flow value fed back by the flow sensor.

[0008] In some embodiments, the power assembly includes a linear motor, a connector connected to the linear motor;

[0009] Wherein, the connecting piece is also connected to the piston of the cylinder.

[0010] In some embodiments, the power assembly further includes a slide, which is slidably connected to the connecting member to assist the connecting member in performing reciprocating motion.

[0011] In some embodiments, the sinusoidal airflow generator further includes a box body and a fixing frame arranged in the box body; wherein the cylinder, power assembly, output pipe and feedback assembly are all arranged in the box body, and the end of the output pipe away from the cylinder is connected to the outside of the box body.

[0012] In some embodiments, the fixing frame is installed at the bottom of the box, and the fixing frame is connected to the cylinder for fixing the cylinder.

[0013] In some embodiments, the fixing frame is a hollow frame structure, and the hollow portion of the fixing frame is connected to the cylinder.

[0014] In some embodiments, the box body is further provided with a plurality of strip-shaped heat dissipation holes.

[0015] A second aspect of the present invention provides a respiratory support device, comprising the sinusoidal airflow generator described in any one of the above solutions.

[0016] By adopting the above technical solution, the utility model mainly has the following technical effects:

[0017] By feeding back the real-time flow value tested by the flow sensor to the main control board, and adjusting the output power of the power component through the main control board to adjust the movement speed of the piston in the cylinder, the technical problem of the large error between the actual output waveform airflow and the standard waveform airflow is solved, and the technical effect of reducing the error between the actual output waveform airflow and the standard waveform airflow is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a sinusoidal airflow generator of the present invention;

[0019] Figure 2 This is a schematic diagram of the (internal) structure of a sinusoidal airflow generator of the present invention.

[0020] The meanings of the reference numerals are as follows:

[0021] 1. Cylinder;

[0022] 2. Power assembly; 21. Linear motor; 22. Connector; 23. Slide;

[0023] 3. Output tube;

[0024] 4. Feedback component; 41. Flow sensor;

[0025] 5. Main control board;

[0026] 6. Box body;

[0027] 7. Fixed bracket. DETAILED DESCRIPTION

[0028] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Example 1

[0031] See also Figure 1-Figure 2 In a first aspect, the present invention provides a sinusoidal airflow generator. In practical applications, the sinusoidal airflow generator is installed in a ventilator or anesthesia system to simulate the airflow generated by a patient's breathing. The generator comprises a cylinder 1, a power assembly 2 connected to the cylinder 1, an output pipe 3 connected to the cylinder 1, a feedback assembly 4 provided on the output pipe 3, and a main control board 5 electrically connected to the feedback assembly 4. The main control board 5 is also connected to the power assembly 2.

[0032] In some embodiments, the cylinder 1 is used to generate airflow. Those skilled in the art will understand that a piston that can move back and forth is provided inside the cylinder 1. The reciprocating motion of the piston in the cylinder 1 can achieve periodic intake and exhaust, thereby generating a sinusoidal airflow.

[0033] Furthermore, the power assembly 2 is connected to the cylinder 1 and is used to drive the piston to reciprocate in the cylinder 1. By setting up the power assembly 2, on the one hand, the power assembly 2 is used to provide power to drive the piston to reciprocate in the cylinder, thereby generating airflow in the cylinder 1; on the other hand, the output power of the power assembly 2 can also be adjusted to adjust the airflow rate. The specific adjustment process will be further explained below.

[0034] In some embodiments, the power assembly 2 includes a linear motor 21 and a connector 22 connected to the linear motor 21, wherein the connector 22 is also connected to the piston of the cylinder 1. Furthermore, the linear motor 21 is a transmission device capable of converting electrical energy into linear motion mechanical energy. The operation of the linear motor 21 drives the connector 22 connected to the output end of the linear motor 21 to reciprocate, which in turn drives the piston of the cylinder 1 to reciprocate, generating a sinusoidal airflow. Of course, by adjusting the output power of the linear motor 21, the movement speed and direction of the connector 22 can be adjusted, thereby adjusting the movement speed and direction of the piston in the cylinder 1, thereby adjusting the flow rate of the airflow output from the cylinder 1.

[0035] Furthermore, the power component 2 also includes a slide 23, which is slidably connected to the connecting member 22 and is used to assist the connecting member 22 in reciprocating motion. Specifically, by slidably connecting the connecting member 22 and the slide 23, on the one hand, the connecting member 22 is fixed, and on the other hand, the reciprocating motion of the connecting member 22 can be made smoother, thereby making the reciprocating motion of the piston in the cylinder 1 smoother.

[0036] Furthermore, one end of the output pipe 3 is connected to the cylinder 1 for outputting the airflow generated by the cylinder 1. In some embodiments, the feedback component 4 includes: a flow sensor 41, which is arranged on the output pipe 3 and is used to obtain the flow rate of the airflow in the output pipe 3 in real time and feed the data back to the main control board 5.

[0037] In some embodiments, the main control board 5 is further configured to adjust the output power of the power assembly 2 based on the real-time flow value fed back by the flow sensor 41. Specifically, when the real-time flow value obtained by the flow sensor 41 is greater than or less than the sinusoidal wave flow value, the main control board 5 can issue a command to increase or decrease the output power of the linear motor 21 and adjust the speed of the piston in the cylinder 1 so that the flow generated by the sinusoidal flow generator changes with time and presents a sinusoidal wave shape, simulating the periodic changes of the airflow during a patient's breathing according to a specific frequency and amplitude. For example, the linear motor 21 operates at a first speed. When the real-time flow value obtained by the flow sensor 41 is greater than the sinusoidal wave flow value, the main control board 5 controls the linear motor to operate at a second speed, wherein the second speed is less than the first speed. When the linear motor 21 operates at a first speed, when the real-time flow value obtained by the flow sensor 41 is less than the sinusoidal wave flow value, the main control board 5 controls the linear motor to operate at a third speed, wherein the third speed is greater than the first speed, thereby reducing the error between the actual output waveform airflow and the standard waveform airflow.

[0038] Furthermore, the sinusoidal airflow generator also includes a box body 6 and a fixing frame 7 provided in the box body 6; wherein the cylinder 1, power assembly 2, output pipe 3 and feedback assembly 4 are all provided in the box body 6, and the end of the output pipe 3 away from the cylinder 1 is connected to the outside of the box body 6, so that the generated sinusoidal airflow is output to the outside, and the box body 6 has a certain rigidity and hardness. On the one hand, it is used to fix the components provided in the box body 6, and on the other hand, it can also prevent mechanical collision from damaging the internal components, playing a protective role; the fixing frame 7 is provided at the bottom of the box body, and the fixing frame 7 is also connected to the cylinder 1 for fixing the cylinder 1. In some embodiments, the fixing frame 7 is a hollow frame structure, and the hollow part of the fixing frame 7 is connected to the cylinder 1, so that the cylinder 1 is fixed in the box body 1 through the fixing frame 7.

[0039] In some embodiments, the box body 6 is further provided with a plurality of strip-shaped heat dissipation holes 61 for timely dissipating the heat generated inside the sinusoidal flow generator to the outside of the box body 6. On the one hand, it helps to maintain the device operating within a stable temperature range, thereby reducing the impact of temperature changes on the measurement results of the flow sensor 41. On the other hand, it can also prevent the device from overheating and ensure its normal operation.

[0040] Example 2

[0041] A second aspect of the present invention provides a respiratory support device, comprising the sinusoidal airflow generator described in the first embodiment.

[0042] Finally, it should be noted that the embodiments disclosed in the present invention are only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sinusoidal airflow generator, characterized in that: include: A cylinder, a power assembly connected to the cylinder, an output pipe connected to the cylinder, a feedback assembly provided on the output pipe, a main control board electrically connected to the feedback assembly, the main control board also connected to the power assembly; The feedback component includes: a flow sensor, which is provided on the output pipe and is used to obtain the flow rate of the airflow in the output pipe in real time; The main control board is used to adjust the output power of the power component according to the real-time flow value fed back by the flow sensor.

2. A sinusoidal airflow generator according to claim 1, characterized in that: The power assembly includes a linear motor and a connecting piece connected to the linear motor; Wherein, the connecting piece is also connected to the piston of the cylinder.

3. A sinusoidal airflow generator according to claim 2, characterized in that: The power assembly further includes a slide, which is slidably connected to the connecting member and is used to assist the connecting member in performing reciprocating motion.

4. A sinusoidal airflow generator according to claim 1, characterized in that: It also includes a box body and a fixing frame arranged in the box body; wherein the cylinder, power assembly, output pipe and feedback assembly are all arranged in the box body, and the end of the output pipe away from the cylinder is connected to the outside of the box body.

5. The sinusoidal airflow generator according to claim 4, characterized in that: The fixing frame is arranged at the bottom of the box body and is connected to the cylinder for fixing the cylinder.

6. A sinusoidal airflow generator according to claim 5, characterized in that: The fixing frame is a hollow frame structure, and the hollow part of the fixing frame is connected to the cylinder.

7. The sinusoidal airflow generator according to claim 4, characterized in that: The box body is also provided with a plurality of strip-shaped heat dissipation holes.

8. A respiratory support device, characterized in that The invention comprises the sinusoidal airflow generator according to any one of claims 1 to 7.

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