Airflow stabilizing device and breathing machine

Abstract

The utility model relates to the technical field of ventilation treatment, in particular to an airflow stabilizing device and a breathing machine. The airflow stabilizing device comprises a flow stabilizing channel (1) and a plurality of flow sensors (2) arranged on the outer wall of the flow stabilizing channel (1), and a plurality of sub-channels are arranged in the flow stabilizing channel (1) in a dividing mode. A buffer cavity is not needed, the problem of sufficient turbulent flow is solved through the flow stabilizing structure, the structure is simpler, and meanwhile the measurement accuracy and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation therapy, in particular to a stable airflow device and a ventilator. Background Art

[0002] In the field of ventilation therapy, it is very important to accurately monitor flow data. In particular, in existing sleep apnea machines, due to space limitations, flow monitoring is usually not performed at the front end of the fan. Instead, positive pressure airflow is generated after the fan. The space for stabilizing the airflow is very small, and it is easy to generate uneven eddies at the measuring point, which will have a great impact on flow monitoring. Currently, the existing sleep apnea machines are first rectified by small grids, and then a circle of buffer chambers are designed at the flow sensor measurement point for sufficient turbulence. The structure is complex and the monitoring is inaccurate. Therefore, how to organize the uneven eddies into sufficient turbulence for accurate measurement is a technical problem that needs to be solved. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and proposes a stable airflow device and a ventilator, which can make the uneven eddy flow be sorted into sufficient turbulence to facilitate accurate measurement.

[0004] The utility model provides a stable airflow device, which comprises a stable flow channel 1 and a plurality of flow sensors 2 arranged on the outer wall of the stable flow channel 1. The stable flow channel 1 is divided into a plurality of sub-channels.

[0005] Preferably, a plurality of rectifying plates 5 are arranged in the flow stabilizing channel to divide the channel into a plurality of chambers.

[0006] Preferably, the flow stabilizing channel 1 comprises a first sub-channel 3 arranged in the middle; and a plurality of rectifying plates 5 extending from the outer wall of the first channel 3 to the inner wall of the flow stabilizing channel, and a second sub-channel 4 is formed between two adjacent rectifying plates 5 and the inner wall of the flow stabilizing channel 1 and the outer wall of the first channel 3.

[0007] Preferably, the first sub-channel 3 is a circular channel, and the second sub-channel 4 is a fan-shaped channel.

[0008] Preferably, a plurality of identical rectifying plates 5 extending from the axis of the steady flow channel 1 to the inner wall of the steady flow channel 1 are provided in the steady flow channel 1, and a sub-channel is formed between two adjacent rectifying plates.

[0009] Preferably, the cross section of the flow stabilizing channel 1 is in a honeycomb or grid shape.

[0010] Preferably, the steady flow channel 1 is provided with a first inlet 6 of a flow sensor and a second inlet 7 of a flow sensor for collecting the gas pressure at adjacent positions.

[0011] Preferably, an air resistance member 8 is provided between the first inlet 6 and the second inlet 7 of the flow sensor.

[0012] Preferably, a locking groove 9 is provided at the air outlet of the steady flow channel 1, and the locking groove 9 is used in conjunction with the pipeline.

[0013] The utility model provides a ventilator, which comprises the stabilizing airflow device.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The present application does not require a buffer chamber, but solves the problem of sufficient turbulence through a flow stabilizing structure, which has a simpler structure and improves measurement accuracy and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the utility model stable airflow device;

[0017] Figure 2 This is a top view of the utility model's airflow stabilization device;

[0018] Figure 3 For this utility model Figure 1 BB cross-sectional view;

[0019] Figure 4 This is the gas circuit diagram of the flow stabilizing device of the utility model;

[0020] Figure 5 This is a structural diagram of the current stabilizing device of the utility model;

[0021] Figure 6 This is a front view of another flow stabilizing device of the utility model.

[0022] Reference numerals:

[0023] 1. Flow stabilization channel, 2. Flow sensor, 3. First sub-channel, 4. Second sub-channel, 5. Rectifier plate, 6. First inlet of flow sensor, 7. Second inlet of flow sensor, 8. Air resistance component, 9. Locking groove. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is described in detail below in conjunction with the embodiments and drawings.

[0025] The utility model provides a device for stabilizing airflow, such as Figure 1-4As shown, the stable airflow device includes a stable flow channel 1 and a flow sensor 2 arranged on the outer wall of the stable flow channel 1, and the flow sensor is installed through the first flow sensor inlet 6 and the second flow sensor inlet 7 on the stable flow channel 1. The gas pressure of the adjacent position is collected by the flow sensor inlet, and then the flow value is converted according to the pressure difference; an air resistance member 8 is arranged between the first flow sensor inlet 6 and the second flow sensor inlet 7 on the inner wall of the stable flow channel 1, and a locking groove 9 is arranged at the air outlet of the stable flow channel, and the locking groove 9 is used in conjunction with the locking member corresponding to the pipeline to form a fixation to prevent loosening. The stable flow channel 1 includes a first sub-channel 3 arranged in the middle, and the first sub-channel 3 is a circular channel; and a plurality of rectifier plates 5 extending from the outer wall of the first sub-channel 3 to the inner wall of the stable flow channel, and a second sub-channel 4 is formed between two adjacent rectifier plates 5 and between the inner wall of the stable flow channel 1 and the outer wall of the first sub-channel 3, and the second sub-channel 4 is a fan-shaped channel.

[0026] Figure 1 , Figure 3 The internal structure of the flow stabilization device is shown. The turbulent flow is mainly combed by segmentation and rectification, which divides an airflow path into multiple small chambers, thereby reducing eddy currents and making the turbulence sufficient. The length of the eddy current rectification structure is crucial to the arrangement of the airflow. The longer the rectification structure, the more sufficient the turbulence will be. Due to the current space limitations, the space is used as much as possible to increase the length of the rectification structure.

[0027] Figure 4 As shown in the air path diagram of the flow stabilization device, after the airflow is blown out from the turbine fan, irregular vortices will be generated, which will be rectified into sufficient turbulence by the rectifier plate 5 on the flow stabilization block. The existence of the air resistance structure in the turbulence block will produce a pressure difference between the two measuring points of the flow sensor. After the airflow passes through the flow sensor, the pressure difference is converted into flow data. The air resistance element 8 of the flow sensor can also be closed between the two measuring points of the flow sensor, so that the air resistance is the largest. The air resistance element 8 here can be designed with different structures to achieve the change from minimum to maximum air resistance, and there is no specific air resistance restriction. The position of the air resistance of the flow sensor is as follows: Figure 3 shown.

[0028] The flow stabilizing channel of the present invention may also be provided with a plurality of identical rectifying plates 5 extending from the axis of the flow stabilizing channel 1 to the inner wall of the flow stabilizing channel, and a sub-channel is formed between two adjacent rectifying plates 5 .

[0029] The number of rectifier plates of the utility model is determined according to the size of the product design. The structure of the small air cavities in the flow stabilizing channel is not limited. The sizes of the multiple air cavities can be different or the same, and can be of any shape. For example, the cross section of the flow stabilizing channel is honeycomb or grid-shaped, such as Figure 5 shown.

[0030] like Figure 6As shown, a plurality of identical rectifying plates 5 extending from the axis of the steady flow channel 1 to the inner wall of the steady flow channel 1 are arranged in the steady flow channel 1 of the present invention, and a sub-channel is formed between two adjacent rectifying plates.

[0031] Different designs of the length and thickness parameters of the air resistance element of the flow sensor of the utility model will lead to different air resistances. Air resistances of different sizes can be designed for different requirements.

[0032] The flow sensor and the flow stabilizing device of the utility model cooperate to form sufficient turbulence at the measuring point. The two are combined through an integrated design or a detachable design. The flow stabilizing device is applied to a sleep ventilator or a respiratory therapy device to improve the accuracy of airflow measurement and thus improve the therapeutic effect of the sleep ventilator or the respiratory therapy device.

[0033] The utility model reduces the generation of eddy currents and increases the stability of airflow by optimizing the structural design, so that the flow sensor can measure more accurately.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the embodiments, a person skilled in the art should understand that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims

1. A device for stabilizing airflow, It is characterized in that The stabilizing airflow device comprises a stabilizing flow channel (1) and a plurality of flow sensors (2) arranged on the outer wall of the stabilizing flow channel (1); the stabilizing flow channel (1) is divided into a plurality of sub-channels; The flow stabilizing channel (1) comprises a first sub-channel (3) arranged in the middle; and a plurality of rectifying plates (5) extending from the outer wall of the first sub-channel (3) to the inner wall of the flow stabilizing channel, wherein a second sub-channel (4) is formed between two adjacent rectifying plates (5) and the inner wall of the flow stabilizing channel (1) and the outer wall of the first sub-channel (3); The first sub-channel (3) is a circular channel, and the second sub-channel (4) is a fan-shaped channel; The steady flow channel (1) is provided with a first inlet (6) of a flow sensor and a second inlet (7) of a flow sensor, which are used to collect the gas pressure at adjacent positions; An air resistance element (8) is arranged between the first inlet (6) of the flow sensor and the second inlet (7) of the flow sensor.

2. The stable airflow device according to claim 1, It is characterized in that The cross section of the flow stabilizing channel (1) is in a honeycomb or grid shape.

3. The stable airflow device according to claim 1, It is characterized in that The air outlet of the steady flow channel (1) is provided with a locking groove (9), and the locking groove (9) is used in conjunction with a pipeline.

4. A ventilator, It is characterized in that The ventilator comprises a stable airflow device as described in any one of claims 1-3.

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