CN219878897U

CN219878897U - Air-oxygen mixer of breathing machine

Info

Publication number: CN219878897U
Application number: CN202321512598.3U
Authority: CN
Inventors: 赵英
Original assignee: Taiyuan Normal University
Current assignee: Taiyuan Normal University
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-10-24
Anticipated expiration: 2033-06-14

Abstract

The utility model belongs to the field of medical equipment, and relates to an air-oxygen mixer of a breathing machine. Has the advantages of high safety coefficient and reliable use. The technical proposal comprises: an oxygen pipeline, an air pipeline and a standby pipeline. One end of the oxygen pipeline is communicated with an oxygen source, the other end of the oxygen pipeline is communicated with an air-oxygen mixing gas storage, and the oxygen pipeline is at least provided with an oxygen flow control valve and an oxygen flow sensor. One end of the air pipeline is communicated with an air source, the other end of the air pipeline is communicated with an air-oxygen mixing gas storage device, and at least an air flow control valve and an air flow sensor are arranged on the air pipeline. The standby pipeline is arranged between the oxygen source and/or the air source and the air-oxygen mixed gas storage, at least a standby gas flow control valve and a standby gas flow sensor are arranged on the standby pipeline, and the standby pipeline is configured to replace the oxygen pipeline or the air pipeline to guide corresponding gas into the air-oxygen mixed gas storage.

Description

Air-oxygen mixer of breathing machine

Technical Field

The utility model belongs to the field of medical equipment, and relates to an air-oxygen mixer of a breathing machine.

Background

The breathing machine is one of the necessary rescue equipment of hospitals, wherein the air-oxygen mixer is one of the key gas paths of the breathing machine. In the prior art, an air-oxygen mixer is controlled by combining electromagnetic valves.

The electromagnetic valve combined control type air-oxygen mixer comprises a plurality of electromagnetic valves, air resistance orifice elements and an air mixing gas reservoir, and the electromagnetic valves can be controlled by a microprocessor to control the flow of oxygen and the flow of air so as to achieve the purpose of regulating and controlling the concentration of oxygen in the air mixing gas reservoir.

The electromagnetic valve combination control type air-oxygen mixer has more electric elements, and in the medical process or before equipment preparation, the condition that an oxygen or air inlet passage is blocked due to the failure of the electric elements can occur, if the failure can not be removed in time, the breathing machine can not normally provide oxygen for patients, and serious medical accidents can be caused.

Disclosure of Invention

In order to overcome the defects in the related art, the utility model provides an air-oxygen mixer of a breathing machine, which has the advantages of high safety coefficient and reliable use.

In order to achieve the technical purpose, the utility model provides an air-oxygen mixer of a breathing machine. The air-oxygen mixer of the respirator comprises: an oxygen pipeline, an air pipeline and a standby pipeline. One end of the oxygen pipeline is communicated with an oxygen source, the other end of the oxygen pipeline is communicated with an air-oxygen mixing gas storage, and the oxygen pipeline is at least provided with an oxygen flow control valve and an oxygen flow sensor. One end of the air pipeline is communicated with an air source, the other end of the air pipeline is communicated with an air-oxygen mixing gas storage device, and at least an air flow control valve and an air flow sensor are arranged on the air pipeline. The standby pipeline is arranged between the oxygen source and/or the air source and the air-oxygen mixed gas storage, at least a standby gas flow control valve and a standby gas flow sensor are arranged on the standby pipeline, and the standby pipeline is configured to replace the oxygen pipeline or the air pipeline to guide corresponding gas into the air-oxygen mixed gas storage.

The backup line includes: the device comprises a first air inlet end, a second air inlet end, a first air outlet end and a second air outlet end. Wherein the first air inlet end is communicated with the oxygen source. The second air inlet end is communicated with the air source. The first air outlet end is communicated with the position, close to the air-oxygen mixing gas storage, of the oxygen pipeline. The second air outlet end is communicated with the air pipeline at a position close to the air-oxygen mixing gas storage device.

Preferably, the backup line further comprises: the device comprises a first air inlet pipe, a second air inlet pipe, a standby main pipe, a first air outlet pipe and a second air outlet pipe. One end of the first air inlet pipe is a first air inlet end. One end of the second air inlet pipe is a second air inlet end. The standby main pipe is provided with a standby gas flow control valve and a standby gas flow sensor, and one end of the standby main pipe is communicated with the other end of the first air inlet pipe and the other end of the second air inlet pipe. One end of the first air outlet pipe is a first air outlet end, and the other end of the first air outlet pipe is communicated with the other end of the standby main pipe. One end of the second air outlet pipe is a second air outlet end, and the other end of the second air outlet pipe is communicated with the other end of the standby main pipe.

And electromagnetic valves for controlling the connection or disconnection are arranged on the pipeline between the first air inlet end and the standby main pipe, the pipeline between the second air inlet end and the standby main pipe, the pipeline between the first air outlet end and the standby main pipe and the pipeline between the second air outlet end and the standby main pipe.

Preferably, the air-oxygen mixer further comprises a first solenoid valve. The first electromagnetic valve comprises an oxygen inlet, an air inlet and a first air outlet, wherein the oxygen inlet is communicated with the other end of the first air inlet pipe, the air inlet is communicated with the other end of the second air inlet pipe, and the first air outlet is communicated with one end of the standby main pipe.

Preferably, the air-oxygen mixer further comprises a second electromagnetic valve. The second electromagnetic valve comprises an oxygen outlet, an air outlet and a first air inlet, wherein the oxygen outlet is communicated with the other end of the first air outlet pipe, the air outlet is communicated with the other end of the second air outlet pipe, and the first air inlet is communicated with the other end of the standby main pipe.

Preferably, the air-oxygen mixer further comprises a third electromagnetic valve and a fourth electromagnetic valve, wherein the third electromagnetic valve is arranged on the first air inlet pipe, and the fourth electromagnetic valve is arranged on the second air inlet pipe.

Preferably, the air-oxygen mixer further comprises a fifth electromagnetic valve and a sixth electromagnetic valve, wherein the fifth electromagnetic valve is arranged on the first air outlet pipe, and the sixth electromagnetic valve is arranged on the second air outlet pipe.

Preferably, an oxygen pressure reducing valve is further arranged on the oxygen pipe, and an air pressure reducing valve is further arranged on the air pipe. The air-oxygen mixer further comprises a standby pressure reducing valve, and the standby pressure reducing valve is arranged on the standby main pipe.

Preferably, the air-oxygen mixer comprises: the first electromagnetic valve and the second electromagnetic valve, the air-oxygen mixer also comprises a controller, the controller is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the first electromagnetic valve and the second electromagnetic valve respectively.

Alternatively, the air-oxygen mixer includes: the air-oxygen mixer comprises a first electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve, and is characterized by further comprising a controller, wherein the controller is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the first electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve respectively.

Alternatively, the air-oxygen mixer includes: the air-oxygen mixer further comprises a controller, wherein the controller is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve respectively.

Alternatively, the air-oxygen mixer includes: the air-oxygen mixer further comprises a controller, wherein the controller is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the second electromagnetic valve, the third electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve respectively.

The utility model has the beneficial effects that:

the first and air-oxygen mixers are used as one of the key parts of a respirator, and are generally applied to rescuing patients or maintaining the basic survival process of the patients. The utility model adopts the standby pipeline, can timely play a role when the oxygen pipeline or the air pipeline fails, so that the breathing machine works normally, and medical accidents caused by the failure of the breathing machine are prevented.

The second, the utility model adopts two air inlet ends (the first air inlet end and the second air inlet end), the standby pipeline can be communicated with an oxygen source and an air source at the same time, and simultaneously adopts two air outlet ends (the first air outlet end and the second air outlet end), so that the standby pipeline can conveniently convey corresponding gas into the air-oxygen mixing gas storage according to air inlet, and oxygen and air can be conveniently mixed in the air-oxygen mixing gas storage.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a structural view of embodiment 1 of the present utility model;

FIG. 3 is another construction diagram of embodiment 1 of the present utility model;

FIG. 4 is a structural view of embodiment 2 of the present utility model;

FIG. 5 is another construction diagram of embodiment 2 of the present utility model;

FIG. 6 is a structural view of embodiment 3 of the present utility model;

FIG. 7 is another construction diagram of embodiment 3 of the present utility model;

FIG. 8 is a structural view of embodiment 4 of the present utility model;

fig. 9 is another structural view of embodiment 4 of the present utility model.

Detailed Description

In order to make the above objects, features and advantages of the present utility model more comprehensible, the following description of the embodiments accompanied with the accompanying drawings will be given in detail. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Example 1

The embodiment provides an air-oxygen mixer of a breathing machine. As shown in fig. 1 and 2, the air-oxygen mixer of the respirator includes: an oxygen line 1, an air line 2 and a backup line 3. One end of the oxygen pipeline 1 is communicated with the oxygen source 4, the other end of the oxygen pipeline 1 is communicated with the air-oxygen mixing gas storage 5, and at least an oxygen flow control valve 11 and an oxygen flow sensor 12 are arranged on the oxygen pipeline 1. One end of the air pipeline 2 is communicated with an air source 6, the other end of the air pipeline 2 is communicated with an air-oxygen mixing gas storage 5, and at least an air flow control valve 21 and an air flow sensor 22 are arranged on the air pipeline 2. A backup line 3 is arranged between the oxygen source 4 and/or the air source 6 and the air-oxygen mixing gas storage 5, at least a backup gas flow control valve 36 and a backup gas flow sensor 37 are arranged on the backup line 3, and the backup line 3 is configured to introduce corresponding gas into the air-oxygen mixing gas storage 5 instead of the oxygen line 1 or the air line 2.

The backup line 3 further comprises: a first air inlet pipe 31, a second air inlet pipe 32, a standby main pipe 33, a first air outlet pipe 34 and a second air outlet pipe 35. Wherein, one end of the first air inlet pipe 31 is a first air inlet end, and the first air inlet end is communicated with the oxygen source 4. One end of the second air inlet pipe 32 is a second air inlet end, and the second air inlet end is communicated with the air source 6. The backup main pipe 33 is provided with a backup gas flow control valve 36 and a backup gas flow sensor 37, and one end of the backup main pipe 33 communicates with the other end of the first intake pipe 31 and the other end of the second intake pipe 32. One end of the first air outlet pipe 34 is a first air outlet end, the first air outlet end is communicated with the position, close to the air-oxygen mixing gas storage 5, of the oxygen pipeline 1, and the other end of the first air outlet pipe 34 is communicated with the other end of the standby main pipe 33. One end of the second air outlet pipe 35 is a second air outlet end, the second air outlet end is communicated with the air pipeline 2 at a position close to the air-oxygen mixing gas storage device 5, and the other end of the second air outlet pipe 35 is communicated with the other end of the standby main pipe 33.

Wherein, on the pipeline between first inlet end and the reserve is responsible for 33, on the pipeline between second inlet end and the reserve is responsible for 33, on the pipeline between first outlet end and the reserve is responsible for 33 and on the pipeline between second outlet end and the reserve is responsible for 33 all be provided with the solenoid valve that control switched on or off.

The air-oxygen mixer further comprises a first solenoid valve 7. The first electromagnetic valve 7 comprises an oxygen inlet, an air inlet and a first air outlet, the oxygen inlet is communicated with the other end of the first air inlet pipe 31, the air inlet is communicated with the other end of the second air inlet pipe 32, and the first air outlet is communicated with one end of the standby main pipe 33.

The first electromagnetic valve 7 may be a three-way electromagnetic valve provided at a connection position of the first intake pipe 31, the second intake pipe 32, and the backup main pipe 33. The first electromagnetic valve 7 may switch on or off the first air inlet pipe 31 and the standby main pipe 33 and switch on or off the second air inlet pipe 32 and the standby main pipe 33 according to the requirement, it is understood that when the first air inlet pipe 31 and the second air inlet pipe 32 cannot be simultaneously switched on with the standby main pipe 33, that is, when the pipeline between the first air inlet pipe 31 and the standby main pipe 33 is in a conducting state, the pipeline between the second air inlet pipe 32 and the standby main pipe 33 is in a blocking state; alternatively, when the pipe line between the first intake pipe 31 and the standby main pipe 33 is in a closed state, the pipe line between the second intake pipe 32 and the standby main pipe 33 is in an open state; alternatively, when the pipe line between the first intake pipe 31 and the backup main pipe 33 is in the blocked state, the pipe line between the second intake pipe 32 and the backup main pipe 33 is in the blocked state.

The air-oxygen mixer further comprises a second solenoid valve 8. The second electromagnetic valve 8 comprises an oxygen outlet, an air outlet and a first air inlet, the oxygen outlet is communicated with the other end of the first air outlet pipe 34, the air outlet is communicated with the other end of the second air outlet pipe 35, and the first air inlet is communicated with the other end of the standby main pipe 33.

The second electromagnetic valve 8 may be a three-way electromagnetic valve, and is disposed at a connection position of the standby main pipe 33, the first air outlet pipe 34, and the second air outlet pipe 35. The second electromagnetic valve 8 can switch on or off the first air outlet pipe 34 and the standby main pipe 33 and switch on or off the second air outlet pipe 35 and the standby main pipe 33 according to the requirement, it is understood that when the first air outlet pipe 34 and the second air outlet pipe 35 cannot be simultaneously switched on with the standby main pipe 33, that is, when the pipeline between the first air outlet pipe 34 and the standby main pipe 33 is in a conducting state, the pipeline between the second air outlet pipe 35 and the standby main pipe 33 is in a blocking state; or when the pipeline between the first air outlet pipe 34 and the standby main pipe 33 is in a cut-off state, the pipeline between the second air outlet pipe 35 and the standby main pipe 33 is in a conduction state; alternatively, when the pipe line between the first air outlet pipe 34 and the standby main pipe 33 is in a closed state, the pipe line between the second air outlet pipe 35 and the standby main pipe 33 is in a closed state.

As shown in fig. 3, the oxygen pipeline 1 is further provided with an oxygen pressure reducing valve 13, and the air pipeline 2 is further provided with an air pressure reducing valve 23. The air-oxygen mixer further comprises a standby pressure reducing valve 38, and the standby pressure reducing valve 38 is arranged on the standby main pipe 33.

The oxygen source 4 and the air source 6 in this embodiment are generally high-pressure gases, and the pressure of the gases needs to be reduced in the air-oxygen mixing process, so that the mixing ratio of air and oxygen can be better controlled, and the air-oxygen mixing device is suitable for breathing of patients.

The air-oxygen mixer further comprises a controller electrically connected to the oxygen flow sensor 12, the air flow sensor 22, the backup gas flow control valve 36, the backup gas flow sensor 37, the first solenoid valve 7 and the second solenoid valve 8, respectively.

Example 2

The embodiment provides an air-oxygen mixer of a breathing machine. As shown in fig. 1 and 4, the air-oxygen mixer of the respirator includes: an oxygen line 1, an air line 2 and a backup line 3. One end of the oxygen pipeline 1 is communicated with the oxygen source 4, the other end of the oxygen pipeline 1 is communicated with the air-oxygen mixing gas storage 5, and at least an oxygen flow control valve 11 and an oxygen flow sensor 12 are arranged on the oxygen pipeline 1. One end of the air pipeline 2 is communicated with an air source 6, the other end of the air pipeline 2 is communicated with an air-oxygen mixing gas storage 5, and at least an air flow control valve 21 and an air flow sensor 22 are arranged on the air pipeline 2. A backup line 3 is arranged between the oxygen source 4 and/or the air source 6 and the air-oxygen mixing gas storage 5, at least a backup gas flow control valve 36 and a backup gas flow sensor 37 are arranged on the backup line 3, and the backup line 3 is configured to introduce corresponding gas into the air-oxygen mixing gas storage 5 instead of the oxygen line 1 or the air line 2.

The air-oxygen mixer further comprises a third electromagnetic valve 9 and a fourth electromagnetic valve 10, wherein the third electromagnetic valve 9 is arranged on the first air inlet pipe 31, and the third electromagnetic valve 9 is used for controlling the on or off of the first air inlet pipe 31; the fourth electromagnetic valve 10 is disposed on the second air inlet pipe 32, and the fourth electromagnetic valve 10 is used for controlling the on/off of the second air inlet pipe 32.

It will be appreciated that when the first air intake pipe 31 and the second air intake pipe 32 cannot be simultaneously turned on, that is, when the third electromagnetic valve 9 controls the first air intake pipe 31 to be in the on state, the fourth electromagnetic valve 10 controls the second air intake pipe 32 to be in the off state; alternatively, when the third electromagnetic valve 9 controls the first intake pipe 31 to be in the off state, the fourth electromagnetic valve 10 controls the second intake pipe 32 to be in the on state; alternatively, when the third electromagnetic valve 9 controls the first intake pipe 31 to be in the off state, the fourth electromagnetic valve 10 controls the second intake pipe 32 to be in the off state.

As shown in fig. 5, the oxygen pipeline 1 is further provided with an oxygen pressure reducing valve 13, and the air pipeline 2 is further provided with an air pressure reducing valve 23. The air-oxygen mixer further comprises a standby pressure reducing valve 38, and the standby pressure reducing valve 38 is arranged on the standby main pipe 33.

The air-oxygen mixer further comprises a controller electrically connected to the oxygen flow sensor 12, the air flow sensor 22, the backup gas flow control valve 36, the backup gas flow sensor 37, the second solenoid valve 8, the third solenoid valve 9 and the fourth solenoid valve 10, respectively.

Example 3

The embodiment provides an air-oxygen mixer of a breathing machine. As shown in fig. 1 and 6, the air-oxygen mixer of the respirator includes: an oxygen line 1, an air line 2 and a backup line 3. One end of the oxygen pipeline 1 is communicated with the oxygen source 4, the other end of the oxygen pipeline 1 is communicated with the air-oxygen mixing gas storage 5, and at least an oxygen flow control valve 11 and an oxygen flow sensor 12 are arranged on the oxygen pipeline 1. One end of the air pipeline 2 is communicated with an air source 6, the other end of the air pipeline 2 is communicated with an air-oxygen mixing gas storage 5, and at least an air flow control valve 21 and an air flow sensor 22 are arranged on the air pipeline 2. A backup line 3 is arranged between the oxygen source 4 and/or the air source 6 and the air-oxygen mixing gas storage 5, at least a backup gas flow control valve 36 and a backup gas flow sensor 37 are arranged on the backup line 3, and the backup line 3 is configured to introduce corresponding gas into the air-oxygen mixing gas storage 5 instead of the oxygen line 1 or the air line 2.

The air-oxygen mixer further comprises a fifth electromagnetic valve 11 and a sixth electromagnetic valve 12, wherein the fifth electromagnetic valve 11 is arranged on the first air outlet pipe 34, and the fifth electromagnetic valve 11 is used for controlling the on or off of the first air outlet pipe 34; the sixth electromagnetic valve 12 is disposed on the second air outlet pipe 35, and the sixth electromagnetic valve 12 is used for controlling the on or off of the first air outlet pipe.

It can be understood that, when the pipeline between the first air inlet pipe 31 and the standby main pipe 33 is in a conducting state, the fifth electromagnetic valve 11 controls the first air outlet pipe 34 to be in a conducting state; when the piping between the first air inlet pipe 31 and the standby main pipe 33 is in the cut-off state, the fifth electromagnetic valve 11 controls the first air outlet pipe 34 to be in the cut-off state. When the pipeline between the second air inlet pipe 32 and the standby main pipe 33 is in a conducting state, the sixth electromagnetic valve 12 controls the second air outlet pipe 35 to be in a conducting state; when the pipe line between the second air inlet pipe 32 and the standby main pipe 33 is in the cut-off state, the sixth electromagnetic valve 12 controls the second air outlet pipe 35 to be in the cut-off state.

As shown in fig. 7, the oxygen pipeline 1 is further provided with an oxygen pressure reducing valve 13, and the air pipeline 2 is further provided with an air pressure reducing valve 23. The air-oxygen mixer further comprises a standby pressure reducing valve 38, and the standby pressure reducing valve 38 is arranged on the standby main pipe 33.

The air-oxygen mixer further comprises a controller electrically connected to the oxygen flow sensor 12, the air flow sensor 22, the backup gas flow control valve 36, the backup gas flow sensor 37, the first solenoid valve 7, the fifth solenoid valve 11 and the fourth solenoid valve 10, respectively.

Example 4

The embodiment provides an air-oxygen mixer of a breathing machine. As shown in fig. 1 and 8, the air-oxygen mixer of the respirator includes: an oxygen line 1, an air line 2 and a backup line 3. One end of the oxygen pipeline 1 is communicated with the oxygen source 4, the other end of the oxygen pipeline 1 is communicated with the air-oxygen mixing gas storage 5, and at least an oxygen flow control valve 11 and an oxygen flow sensor 12 are arranged on the oxygen pipeline 1. One end of the air pipeline 2 is communicated with an air source 6, the other end of the air pipeline 2 is communicated with an air-oxygen mixing gas storage 5, and at least an air flow control valve 21 and an air flow sensor 22 are arranged on the air pipeline 2. A backup line 3 is arranged between the oxygen source 4 and/or the air source 6 and the air-oxygen mixing gas storage 5, at least a backup gas flow control valve 36 and a backup gas flow sensor 37 are arranged on the backup line 3, and the backup line 3 is configured to introduce corresponding gas into the air-oxygen mixing gas storage 5 instead of the oxygen line 1 or the air line 2.

It can be understood that, when the third electromagnetic valve 9 controls the first air inlet pipe 31 to be in a conducting state, the fifth electromagnetic valve 11 controls the first air outlet pipe 34 to be in a conducting state; when the third solenoid valve 9 controls the first air inlet pipe 31 to be in the cut-off state, the fifth solenoid valve 11 controls the first air outlet pipe 34 to be in the cut-off state. When the fourth electromagnetic valve 10 controls the second air inlet pipe 32 to be in a conducting state, the sixth electromagnetic valve 12 controls the second air outlet pipe 35 to be in a conducting state; when the fourth electromagnetic valve 10 controls the second air inlet pipe 32 to be in the cut-off state, the sixth electromagnetic valve 12 controls the second air outlet pipe 35 to be in the cut-off state.

As shown in fig. 9, the oxygen pipeline 1 is further provided with an oxygen pressure reducing valve 13, and the air pipeline 2 is further provided with an air pressure reducing valve 23. The air-oxygen mixer further comprises a standby pressure reducing valve 38, and the standby pressure reducing valve 38 is arranged on the standby main pipe 33.

The air-oxygen mixer further comprises a controller electrically connected with the oxygen flow sensor 12, the air flow sensor 22, the standby gas flow control valve 36, the standby gas flow sensor 37, the first electromagnetic valve 7, the fifth electromagnetic valve 11 and the sixth electromagnetic valve 12, respectively.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. An air-oxygen mixer of a ventilator, comprising:

one end of the oxygen pipeline is communicated with an oxygen source, the other end of the oxygen pipeline is communicated with an air-oxygen mixing gas storage, and the oxygen pipeline is at least provided with an oxygen flow control valve and an oxygen flow sensor;

one end of the air pipeline is communicated with an air source, the other end of the air pipeline is communicated with an air-oxygen mixing gas storage, and at least an air flow control valve and an air flow sensor are arranged on the air pipeline;

a standby pipeline arranged between the oxygen source and/or the air source and the air-oxygen mixed gas storage, wherein the standby pipeline is at least provided with a standby gas flow control valve and a standby gas flow sensor, and the standby pipeline is configured to replace the oxygen pipeline or the air pipeline to guide corresponding gas into the air-oxygen mixed gas storage;

the backup line includes:

the first air inlet end is communicated with the oxygen source;

the second air inlet end is communicated with the air source;

the first air outlet end is communicated with the position, close to the air-oxygen mixing gas storage, of the oxygen pipeline;

the second air outlet end is communicated with the air pipeline at a position close to the air-oxygen mixing gas storage device.

2. The air-to-oxygen mixer of a ventilator of claim 1, wherein the backup line further comprises:

the first air inlet pipe is provided with a first air inlet end at one end;

the second air inlet pipe is provided with a second air inlet end at one end;

the standby main pipe is provided with a standby gas flow control valve and a standby gas flow sensor, and one end of the standby main pipe is communicated with the other end of the first air inlet pipe and the other end of the second air inlet pipe;

one end of the first air outlet pipe is a first air outlet end, and the other end of the first air outlet pipe is communicated with the other end of the standby main pipe;

the second air outlet pipe is provided with a second air outlet end at one end, and the other end of the second air outlet pipe is communicated with the other end of the standby main pipe;

3. The air-to-oxygen mixer of a ventilator of claim 2, further comprising a first solenoid valve;

the first electromagnetic valve comprises an oxygen inlet, an air inlet and a first air outlet, wherein the oxygen inlet is communicated with the other end of the first air inlet pipe, the air inlet is communicated with the other end of the second air inlet pipe, and the first air outlet is communicated with one end of the standby main pipe.

4. The air-to-oxygen mixer of a ventilator of claim 2, further comprising a second solenoid valve;

the second electromagnetic valve comprises an oxygen outlet, an air outlet and a first air inlet, wherein the oxygen outlet is communicated with the other end of the first air outlet pipe, the air outlet is communicated with the other end of the second air outlet pipe, and the first air inlet is communicated with the other end of the standby main pipe.

5. The air-oxygen mixer of a respirator according to claim 2, further comprising a third solenoid valve disposed on the first air inlet pipe and a fourth solenoid valve disposed on the second air inlet pipe.

6. The air-oxygen mixer of claim 2, further comprising a fifth solenoid valve and a sixth solenoid valve, wherein the fifth solenoid valve is disposed on the first outlet tube, and wherein the sixth solenoid valve is disposed on the second outlet tube.

7. An air-oxygen mixer of a respirator according to any one of claims 2 to 6, wherein an oxygen pressure reducing valve is further provided on the oxygen line, and an air pressure reducing valve is further provided on the air line;

the air-oxygen mixer further comprises a standby pressure reducing valve, and the standby pressure reducing valve is arranged on the standby main pipe.

8. The air-to-oxygen mixer of a ventilator of claim 7, wherein the air-to-oxygen mixer comprises: the air-oxygen mixer further comprises a controller, wherein the controller is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the first electromagnetic valve and the second electromagnetic valve respectively;

alternatively, the air-oxygen mixer includes: the air-oxygen mixer further comprises a controller which is electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the first electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve respectively;

alternatively, the air-oxygen mixer includes: the air-oxygen mixer further comprises a controller which is respectively and electrically connected with the oxygen flow sensor, the air flow sensor, the standby gas flow control valve, the standby gas flow sensor, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve;