Air and oxygen mixing device

Abstract

The utility model discloses an air-oxygen mixing device, which relates to the technical field of medical instruments, and comprises a shell, a rectifying part arranged in the shell and used for rectifying airflow and a mixing part used for mixing air and oxygen, the shell comprises a first chamber and a second chamber which are communicated with each other, a first opening for introducing oxygen and a second opening for introducing air are formed in the side wall of the first cavity, a third opening for discharging air is formed in the side wall of the second cavity, the rectifying part and the mixing part are arranged in the first cavity, and the rectifying part is arranged between the first opening and the mixing part; the mixing part is composed of a plurality of mixing pieces, each mixing piece comprises a fixing plate provided with a flowing hole and a mixing column fixedly installed on the fixing plate, and the flowing holes and the mixing columns are arranged in a crossed mode. Oxygen and air enter the shell from the first opening and the second opening respectively, are mixed by the mixing part and then are discharged from the third opening, and the mixing part can fully mix the air and the oxygen.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an air-oxygen mixing device. Background Technology

[0002] A ventilator is a medical device that can replace, control, or alter a person's normal physiological breathing, increase lung ventilation, improve respiratory function, reduce respiratory work consumption, and conserve cardiac reserve. As a key component of a ventilator, the air-oxygen mixer regulates and balances the oxygen concentration of air and oxygen according to their volume ratio, thereby achieving an ideal oxygen concentration. This prevents oxygenation complications caused by excessively high oxygen levels and insufficient oxygen supply caused by excessively low oxygen levels, providing patients with a safe and appropriate oxygen supply environment.

[0003] However, existing air-oxygen mixers only have a simple mixing chamber, with air and oxygen entering the mixing chamber from different inlets and mixing freely. This results in insufficient gas mixing, which can affect the medical outcome. Utility Model Content

[0004] The purpose of this invention is to provide an air-oxygen mixing device that can fully mix air and oxygen.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an air-oxygen mixing device, comprising a housing and a rectifying part for rectifying airflow and a mixing part for mixing air and oxygen disposed within the housing. The housing includes a first chamber and a second chamber that are interconnected. The side wall of the first chamber has a first opening for oxygen inlet and a second opening for air inlet. The side wall of the second chamber has a third opening for air outlet. The rectifying part and the mixing part are both disposed within the first chamber, and the rectifying part is disposed between the first opening and the mixing part.

[0006] The mixing section consists of several mixing components, including a fixed plate with flow holes and a mixing column fixedly mounted on the fixed plate. The flow holes and the mixing column are arranged intersectingly.

[0007] The technical principle of this utility model is as follows: Oxygen and air enter the first chamber inside the shell through the first opening and the second opening, respectively. The flow direction of oxygen is the same as the axial direction of the mixing column, and oxygen forms a local micro vortex around the mixing column. The flow direction of air is perpendicular to the axial direction of the mixing column. After the air enters the local micro vortex formed by oxygen, it can fully mix air and oxygen, and then be discharged through the second chamber and the third opening.

[0008] Furthermore, the rectifier section includes a rectifier component consisting of multiple concentric rings with gradually increasing diameters coaxially mounted on the same plane. A gap is left between two adjacent concentric rings, and a fixing component connecting the two adjacent concentric rings is provided in the gap.

[0009] Furthermore, the rectifier is shaped like a steamed bun, with a high center and gradually decreasing in height towards the edges.

[0010] Furthermore, a turbine fan is installed in the second chamber, with the inlet of the turbine fan connected to the first chamber and the outlet of the turbine fan connected to the third opening.

[0011] Furthermore, a fixing post and a connector are fixedly installed on the side wall of the shell. The fixing post is equipped with a buffer cap, the connector has a shock-absorbing groove, and a silicone tube communicating with the third opening is provided at the third opening.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Oxygen can form local micro-vortices around the mixing column. After air enters the local micro-vortices formed by oxygen, the air-oxygen mixing efficiency is high, and air and oxygen can be fully mixed, thus resulting in good medical effects.

[0014] 2. The rectifier section can rectify the gas entering the housing, so that oxygen enters the housing at a stable flow rate and mixes with the air, thereby further improving the mixing effect of air and oxygen.

[0015] 3. The turbine fan can stably discharge the mixed air and oxygen, avoiding any impact on subsequent mixing;

[0016] 4. The use of fasteners, connectors, and silicone tubes reduces the impact of vibrations generated during use on the external environment. Attached Figure Description

[0017] Figure 1 This is an axonometric view of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the shell structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the hybrid component in this utility model;

[0022] Figure 6 This is a schematic diagram of the rectifier component in this utility model.

[0023] In the above attached figures:

[0024] 1. Housing; 101. End cap; 102. Fixing post; 103. Buffer cap; 104. Connector; 105. Shock-absorbing groove; 106. Silicone tube; 107. First chamber; 108. Second chamber; 109. First opening; 110. Second opening; 111. Third opening; 112. Limiting protrusion;

[0025] 2. Mixing component; 201. Fixed plate; 202. Flow hole; 203. Notch; 204. Mixing column;

[0026] 3. Rectifier components; 301. Concentric rings; 302. Fixing components;

[0027] 4. Turbine fan; 401. Heat sink fins. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments; the structures described in various embodiments can be freely combined without conflict in terms of structure or principle.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] The following description, in conjunction with the accompanying drawings, describes some embodiments of the present invention:

[0032] like Figures 1-6As shown, this utility model proposes an air-oxygen mixing device, including a housing 1 and a rectifier for rectifying airflow and a mixing part for mixing air and oxygen disposed in the housing 1. The housing 1 includes a first chamber 107 and a second chamber 108 that are interconnected. The side wall of the first chamber 107 has a first opening 109 for oxygen access and a second opening 110 for air access. The side wall of the second chamber 108 has a third opening 111 for air outlet. The rectifier and the mixing part are both disposed in the first chamber 107, and the rectifier is disposed between the first opening 109 and the mixing part.

[0033] The mixing section consists of several mixing components 2. Each mixing component 2 includes a fixed plate 201 with flow holes 202 and a mixing column 204 fixedly mounted on the fixed plate 201. The flow holes 202 and the mixing column 204 are arranged intersectingly.

[0034] An end cap 101 is provided on the housing 1, and a sealing ring is provided between the end cap 101 and the housing 1. A first opening 109 is provided on the end cap 101. The end cap 101 is detachably connected to the housing 1, which facilitates the replacement and cleaning of the mixing part inside the housing 1.

[0035] Normally, the oxygen introduced into the housing 1 is high-pressure oxygen. The rectifier can rectify the oxygen entering the housing 1, reduce the impact of high-pressure oxygen on the inside of the housing 1, and stabilize the high-pressure oxygen entering the housing 1, thereby further improving the air-oxygen mixing effect.

[0036] The inner wall of the housing 1 is provided with a limiting protrusion 112, and the fixing plate 201 is provided with a notch 203 that cooperates with the limiting protrusion 112. In order to ensure the stability of the hybrid component 2 installed in the housing 1, the number of limiting protrusions 112 and notches 203 are both 3.

[0037] The number of mixing components 2 is greater than or equal to 1. The number of mixing components 2 is selected according to the space inside the housing 1. The more mixing components 2 there are, the better the mixing effect. Based on the size of the housing 1 in this device, the number of mixing components 2 is 3. Oxygen enters the housing 1 through the first opening 109 and flows through the flow holes 202 on the fixing plate 201. The flow direction of the oxygen is the same as the axial direction of the mixing column 204, and the oxygen forms a local micro-vortex around the mixing column 204. Air enters the housing 1 through the second opening 110. The flow direction of the air is perpendicular to the axial direction of the mixing column 204. After the air enters the local micro-vortex formed by the oxygen, the air-oxygen mixing efficiency is high. Inside the housing 1, the mixing column 204 is set against the adjacent fixing plate 201 to ensure the stability of the mixing components 2 installed inside the housing 1 and to avoid the mixing components 2 shaking due to airflow, thereby further improving the air-oxygen mixing effect.

[0038] Furthermore, such as Figure 2 and Figure 6As shown, the rectifier section includes a rectifier 3 consisting of multiple concentric rings 301 with gradually increasing diameters arranged coaxially on the same plane. There is a gap between two adjacent concentric rings 301, and a fixing member 302 connecting the two adjacent concentric rings 301 is provided in the gap.

[0039] The number of rectifiers 3 is greater than or equal to 1, preferably 1. After the high-pressure oxygen enters the housing 1 through the first opening 109, part of the high-pressure oxygen will impact the concentric rings 301 with different diameters, and the other part of the high-pressure oxygen will directly enter the mixing section through the gap between two adjacent concentric rings 301. This can reduce the impact of high-pressure oxygen on the mixing section, and the high-pressure oxygen can be rectified through the gap between two adjacent concentric rings 301, so that oxygen enters the housing 1 at a stable flow rate, thereby improving the air-oxygen mixing effect.

[0040] Furthermore, such as Figure 2 and Figure 6 As shown, the rectifier 3 is a bun-shaped component that is high in the middle and gradually decreases in height towards the edges.

[0041] The above settings can further reduce the impact of high-pressure oxygen on the mixing section, thereby further improving the mixing effect of air and oxygen. When the number is greater than 1, there is a gap between adjacent rectifiers 3 to prevent concentric circles from blocking the gap of another rectifier.

[0042] Furthermore, such as Figure 2 and Figure 3 As shown, a turbine fan 4 is installed in the second chamber 108. The air inlet of the turbine fan 4 is connected to the first chamber 107, and the air outlet of the turbine fan 4 is connected to the third opening 111.

[0043] The air-oxygen mixture, after being mixed in the mixing section, is discharged from the housing 1 by the turbine fan 4, which prevents the mixed air-oxygen mixture from remaining in the housing 1 and affecting the subsequent air-oxygen mixing effect. The turbine fan 4 is equipped with heat dissipation fins 401, which can improve the heat dissipation effect of the turbine fan 4.

[0044] Furthermore, such as Figure 1 and Figure 4 As shown, a fixing post 102 and a connector 104 are fixedly installed on the side wall of the housing 1. A buffer cap 103 is provided on the fixing post 102, a shock-absorbing groove 105 is opened on the connector 104, and a silicone tube 106 communicating with the third opening 111 is provided at the third opening 111.

[0045] The fixed column 102 is integrally formed with the housing 1. The turbine fan 4 has rotational inertia when operating inside the housing 1, and the gas entering the housing 1 also experiences impact force. The rotational inertia of the turbine fan 4 and the impact force of the gas will cause significant vibration during operation. If this device is rigidly connected to other components, it will have a significant impact on those components. By using the fixing member 302, the connecting member 104, and the silicone tube 106, the connection between this device and other components is made flexible, creating an elasticity between them. This reduces the impact of vibration generated during use on other components.

Claims

1. An air-oxygen mixing device, characterized by: The application relates to a shell (1) and a rectifying part and a mixing part arranged in the shell (1) for rectifying airflow and mixing air and oxygen, the shell (1) comprising a first chamber (107) and a second chamber (108) in communication with each other, a first opening (109) for accessing oxygen and a second opening (110) for accessing air being formed in the side wall of the first chamber (107), and a third opening (111) for discharging air being formed in the side wall of the second chamber (108), the rectifying part and the mixing part being arranged in the first chamber (107), and the rectifying part being arranged between the first opening (109) and the mixing part. The mixing part is composed of a plurality of mixing pieces (2), each of the mixing pieces (2) comprising a fixed plate (201) provided with a flow hole (202) and a mixing column (204) fixedly arranged on the fixed plate (201), and the flow hole (202) and the mixing column (204) being arranged in cross.

2. The air-oxygen mixing device of claim 1, wherein The rectifying part comprises a rectifying piece (3) formed by a plurality of concentric circular rings (301) with gradually increasing diameters and arranged in the same plane in sequence.

3. An air-oxygen mixing device according to claim 2, wherein The rectifying piece (3) is in the shape of a steamed bun with a high middle and gradually decreasing periphery.

4. An air-oxygen mixing device according to any one of claims 1 to 3, characterized in that A turbine fan (4) is arranged in the second chamber (108), the air inlet end of the turbine fan (4) being in communication with the first chamber (107), and the air outlet end of the turbine fan (4) being in communication with the third opening (111).

5. An air-oxygen mixing device according to any one of claims 1 to 3, wherein A fixed column (102) and a connecting piece (104) are fixedly arranged on the side wall of the shell (1), a buffer cap (103) is arranged on the fixed column (102), a damping groove (105) is formed in the connecting piece (104), and a silica gel tube (106) in communication with the third opening (111) is arranged at the third opening (111).

6. An air-oxygen mixing device according to claim 4, wherein A fixed column (102) and a connecting piece (104) are fixedly arranged on the side wall of the shell (1), a buffer cap (103) is arranged on the fixed column (102), a damping groove (105) is formed in the connecting piece (104), and a silica gel tube (106) in communication with the third opening (111) is arranged at the third opening (111).

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