Breathing machine and breathing machine system

Abstract

The utility model relates to a breathing machine and a breathing machine system. The breathing machine comprises an inspiration pipeline used for inspiration of air, first oxygen and second oxygen, and the first oxygen and the second oxygen are different in air pressure; the turbofan is located on the air suction pipeline and comprises a first air inlet and a first air outlet which communicate with each other, and the first air inlet communicates with the air suction pipeline and is used for sucking air; the air-oxygen mixer is located on the air suction pipeline, the air-oxygen mixer comprises a second air inlet and a third air inlet which are communicated, the second air inlet is communicated with the first air outlet, and the third air inlet is communicated with the air suction pipeline and used for sucking the first oxygen or the second oxygen. The air sucked by the turbofan is then introduced into the air-oxygen mixer to be mixed with the high-pressure oxygen or the low-pressure oxygen to form mixed gas, the situation that the high-pressure oxygen makes direct contact with the turbofan to damage the turbofan can be avoided, and the safety and reliability of the breathing machine can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of ventilator equipment, and in particular to a ventilator and a ventilator system. Background Art

[0002] A ventilator is a medical device that can deliver oxygen-containing gas into the user's lungs and expel carbon dioxide-containing gas out of the user's body to help the user complete ventilation. At present, the turbine blower in the ventilator inhales the required proportion of air and oxygen together to obtain a mixed gas with a preset oxygen concentration for the user to inhale. However, the oxygen source of the ventilator is usually high-pressure oxygen, which will produce a large airflow impact on the turbine blower, causing the temperature in the turbine blower to rise sharply, which can easily cause significant damage to the turbine blower. Utility Model Content

[0003] Based on this, it is necessary to provide a ventilator and a ventilator system to address the problem that high-pressure oxygen will produce a large airflow impact on the turbine blower, causing the temperature in the turbine blower to rise sharply, thereby easily causing great damage to the turbine blower.

[0004] In a first aspect, a ventilator comprises:

[0005] an inhalation pipeline, used for inhaling air, a first oxygen and a second oxygen, wherein the gas pressures of the first oxygen and the second oxygen are different;

[0006] A turbo fan, located on the air intake pipeline, the turbo fan comprises a first air inlet and a first air outlet that are connected to each other, the first air inlet is connected to the air intake pipeline and is used to inhale the air;

[0007] An air-oxygen mixer is located on the air intake pipeline, and includes a second air inlet and a third air inlet that are connected to each other. The second air inlet is connected to the first air outlet, and the third air inlet is connected to the air intake pipeline and is used to inhale the first oxygen or the second oxygen.

[0008] In one embodiment, the air inhalation pipeline includes a first pipeline, a second pipeline and a third pipeline that are connected to each other, the first pipeline is used to inhale the air, the second pipeline is used to inhale the first oxygen, and the third pipeline is used to inhale the second oxygen. The end of the first pipeline is connected to the first air inlet, and the ends of the second pipeline and the third pipeline are connected to the second air inlet.

[0009] In one embodiment, the ventilator further includes a first pressure sensor and a decompression component located on the third pipeline, the first pressure sensor is electrically connected to the decompression component, and the first pressure sensor is used to control the decompression component to decompress the second oxygen when detecting that the pressure of the second oxygen is greater than a preset pressure value.

[0010] In one embodiment, the ventilator also includes a proportional valve, a flow stabilizer and a first flow sensor located on the third pipeline, the proportional valve is used to control the flow of oxygen after being decompressed by the decompression component, the flow stabilizer is used to stabilize the flow of the oxygen, and the first flow sensor is electrically connected to the proportional valve.

[0011] In one embodiment, the turbo blower has a constant rotation speed, and the ventilator further includes a flow valve located on the inhalation pipeline, and the flow valve is used to control the flow and pressure of the mixed gas passing through the air-oxygen mixer.

[0012] In one embodiment, the ventilator also includes a mixing pipeline and a temperature sensor and a mixed gas control component located on the mixing pipeline. The air-oxygen mixer also includes a second air outlet. The mixing pipeline is connected to the second air outlet and is used to transport the mixed gas in the air-oxygen mixer to the user for inhalation. The temperature sensor is electrically connected to the turbine blower, and the mixed gas control component is used to detect and control the air pressure and flow of the mixed gas.

[0013] In one embodiment, the ventilator further includes an exhalation circuit, a purge circuit, and a purge air resistor and a purge valve located on the purge circuit, wherein the exhalation circuit is used for the user to exhale gas, and the purge circuit is connected to the inhalation circuit and the exhalation circuit at the same time, and the purge circuit is used to inhale at least the second oxygen in the inhalation circuit and transmit it to the exhalation circuit to blow out the accumulated liquid in the exhalation circuit, the purge air resistor is used to control the flow rate of the second oxygen, and the purge valve is used to control the on-off of the purge circuit.

[0014] In one embodiment, the ventilator also includes an exhalation circuit and an exhalation gas control component located on the exhalation circuit and an exhalation non-positive pressure valve, wherein the exhalation gas control component is electrically connected to the exhalation non-positive pressure valve, and the exhalation gas control component is used to detect the pressure and flow of the exhaled gas, and control the exhalation non-positive pressure valve to adjust the pressure value of the exhaled gas.

[0015] In one of the embodiments, the ventilator further includes an atomization pipeline, which is connected to the inhalation pipeline, and the atomization pipeline is used to inhale at least the second oxygen in the inhalation pipeline.

[0016] In a second aspect, the ventilator system comprises a ventilator as described in the first aspect.

[0017] The above-mentioned ventilator only introduces air into the turbine blower, and directly introduces high-pressure oxygen or low-pressure oxygen into the air-oxygen mixer. The air inhaled by the turbine blower is then introduced into the air-oxygen mixer and mixed with high-pressure oxygen or low-pressure oxygen to form a mixed gas for the user to inhale. This can avoid direct contact between high-pressure oxygen and the turbine blower to damage the turbine blower, and can improve the safety and reliability of the ventilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A hydraulic schematic diagram of an exhalation circuit, an inhalation circuit, a mixing circuit, a purge circuit and an atomization circuit in a ventilator provided in an embodiment of the present application.

[0019] Figure 2 A hydraulic diagram of a ventilator provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 100, ventilator; 10, user;

[0022] 1. Exhalation circuit; 11. Zeroing valve of the first pressure sensor; 12. Zeroing valve of the second pressure sensor; 13. Exhalation differential pressure sensor; 14. Exhalation pressure sensor; 15. Exhalation valve air resistance; 16. Inspiratory pressure differential flow sensor; 17. Exhalation non-positive pressure valve;

[0023] 2. Intake pipeline; 21. First pipeline; 211. Air filter; 212. First-stage noise reduction box; 213. Air pressure sensor; 214. Turbine outlet pressure sensor; 22. Second pipeline; 221. Stop valve; 23. Third pipeline; 231. High-pressure oxygen filter; 232. First pressure sensor; 233. Pressure relief valve; 234. First check valve; 235. Pressure reducing valve; 236. Proportional valve; 237. Flow stabilizer; 238. First flow sensor; 239. Second check valve;

[0024] 3. Mixing pipeline; 31. Temperature sensor; 32. Second flow sensor; 33. Oxygen concentration sensor; 34. Third one-way valve; 35. Bypass air resistance; 36. Inhalation pressure sensor; 37. Inhalation pressure zeroing valve; 38. Electronic safety valve; 39. Mechanical safety valve;

[0025] 4. Purge pipeline; 41. Purge air resistance; 42. Purge valve;

[0026] 5. Atomization pipeline; 51. Atomization valve; 52. Atomization gas resistance;

[0027] 6. Turbine fan;

[0028] 7. Air-oxygen mixer;

[0029] 8. Flow valve. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] The embodiment of the present application provides a ventilator 100 system, which is suitable for ordinary wards, intensive care units, emergency departments, ambulances, home care and other places. The ventilator 100 system includes a ventilator 100. The ventilator 100 system may also include other medical equipment that can be used for combined treatment with the ventilator 100. For example, it may also include monitoring equipment and drug delivery equipment. The monitoring equipment may be a magnetic resonance imaging device or a layered contrast scanner, and the drug delivery equipment may be a nebulizer or a metered dose inhaler.

[0032] See also Figure 1 and Figure 2 The ventilator 100 of the embodiment of the present application includes an inhalation pipeline 2, a turbo blower 6 and an air-oxygen mixer 7. The inhalation pipeline 2 is used to inhale air, a first oxygen and a second oxygen, and the air pressures of the first oxygen and the second oxygen are different. It should be noted that in this embodiment, the first oxygen refers to low-pressure oxygen, specifically oxygen below 101 KPa; the second oxygen refers to high-pressure oxygen, specifically oxygen above 101 KPa.

[0033] In order to solve the problem that high-pressure oxygen can easily damage the turbine blower 6, the turbine blower 6 in the embodiment of the present application is located on the air intake line 2, and the turbine blower 6 includes a first air inlet and a first air outlet that are connected, and the first air inlet is connected to the air intake line 2 and is used to inhale air. The air-oxygen mixer 7 is located on the air intake line 2, and the air-oxygen mixer 7 includes a second air inlet, a third air inlet and a second air outlet that are connected. The second air inlet is connected to the first air outlet of the turbine blower 6, and the third air inlet is connected to the air intake line 2 and is used to inhale high-pressure oxygen or low-pressure oxygen. In other words, in the embodiment of the present application, only air is introduced into the turbine blower 6, and high-pressure oxygen or low-pressure oxygen is directly introduced into the air-oxygen mixer 7, and the air inhaled by the turbine blower 6 is then introduced into the air-oxygen mixer 7 to mix with high-pressure oxygen or low-pressure oxygen to form a mixed gas for the user 10 to inhale, which can avoid direct contact between high-pressure oxygen and the turbine blower 6 and damage the turbine blower 6, and can improve the safety and reliability of the ventilator 100.

[0034] The embodiment of the present application does not limit the specific types of the turbo fan 6 and the air-oxygen mixer 7. For example, the turbo fan 6 can be a centrifugal turbo fan, an axial turbo fan, a mixed flow turbo fan or a volute turbo fan, etc. The air-oxygen mixer 7 can be a mechanical pneumatic balanced mixer, a solenoid valve combined mixer, an oxygen collection flow regulating mixer, a proportional electromagnetic control mixer or a stepping motor controlled mixer, etc.

[0035] See also Figure 1 and Figure 2 In some embodiments, the air intake pipeline 2 includes a first pipeline 21, a second pipeline 22, and a third pipeline 23 connected to each other. The first pipeline 21 is used to inhale air, the second pipeline 22 is used to inhale high-pressure oxygen, and the third pipeline 23 is used to inhale low-pressure oxygen. The end of the first pipeline 21 is connected to the first air inlet of the turbine fan 6, and the end of the second pipeline 22 and the end of the third pipeline 23 are connected to the second air inlet of the air-oxygen mixer 7. Therefore, high-pressure oxygen, low-pressure oxygen and air are inhaled from three pipelines respectively, so that each type of gas can be kept pure independently and avoid mutual interference, and it is convenient to control the oxygen content and oxygen pressure in the mixed gas formed by mixing air with high-pressure oxygen or low-pressure oxygen.

[0036] See also Figure 1 and Figure 2 In some embodiments, the turbo fan 6 has a constant speed, and the ventilator 100 further includes a flow valve 8 located on the inhalation pipeline 2, and the flow valve 8 is used to control the flow and pressure of the mixed gas discharged through the air-oxygen mixer 7. It should be noted that in the related art, the turbo fan 6 will control the flow and pressure of the mixed gas by adjusting its own speed. When the user 10 inhales, the turbo fan 6 will instantly increase to a higher speed. When the user 10 exhales, the turbo fan 6 will instantly reduce its own speed to zero. Such reciprocating cycle will reduce the service life of the turbo fan 6 and generate a lot of noise at the same time. In the embodiment of the present application, by setting the turbo fan 6 to a constant speed and controlling the flow and pressure of the mixed gas through the flow valve 8, the turbo fan 6 can run continuously and smoothly, reduce the instantaneous change of the speed of the turbo fan 6, increase the service life of the turbo fan 6, and reduce the noise generated by the sudden start of the turbo fan 6.

[0037] See also Figure 1 and Figure 2, the front end of the first pipeline 21 is directly connected to the external environment. The first pipeline 21 is provided with an air filter 211, a first-level noise reduction box 212, an air pressure sensor 213, a turbo fan 6 and a turbine outlet pressure sensor 214 in sequence along the direction from its own front end to its rear end. The air filter 211 is used to filter impurities in the air. The first-level noise reduction box 212 is used to reduce the noise of the air. The air pressure sensor 213 is electrically connected to the turbo fan 6, and is used to detect that when the pressure of the air inside the first pipeline 21 reaches a preset air pressure value, the turbo fan 6 is controlled to stop running. The air pressure sensor 213 is used to prevent the first pipeline 21 from being blocked. The turbine outlet pressure sensor 214 is electrically connected to the turbo fan 6, and is used to detect the outlet pressure of the first outlet of the turbo fan 6.

[0038] See also Figure 1 and Figure 2 The front end of the second pipeline 22 is connected to a low-pressure oxygen source, which may be a low-pressure oxygen cylinder, a low-pressure oxygen supply pipeline, or a low-pressure oxygen generator. The second pipeline 22 is provided with a low-pressure oxygen filter and a stop valve 221 in sequence along the direction from its front end to its rear end. The low-pressure oxygen filter is used to filter impurities in the low-pressure oxygen source, and the stop valve 221 is used to control the connection and disconnection between the second pipeline 22 and the second air inlet of the air-oxygen mixer 7, so as to supply or not supply low-pressure oxygen to the air-oxygen mixer 7.

[0039] See also Figure 1 and Figure 2 The front end of the third pipeline 23 is connected to a high-pressure oxygen source, which may be a high-pressure oxygen cylinder or a high-pressure oxygen supply pipeline or an oxygen concentrator. In the direction from the front end of the third pipeline 23 to its rear end, the third pipeline 23 is provided with a high-pressure oxygen filter 231, a first pressure sensor 232 and a decompression component. The high-pressure oxygen filter 231 may be a copper sintered filter or a molecular sieve filter, etc. The first pressure sensor 232 is electrically connected to the decompression component, and the first pressure sensor 232 is used to control the decompression component to decompress the high-pressure oxygen when the pressure of the high-pressure oxygen in the third pipeline 23 is detected to be greater than a preset pressure value.

[0040] See also Figure 1 and Figure 2 Further, the pressure reducing assembly includes a pressure relief valve 233, a first one-way valve 234 and a pressure reducing valve 235 which are sequentially located from the front end to the rear end of the third pipeline 23. The pressure relief valve 233 is electrically connected to the first pressure sensor 232. When the first pressure sensor 232 detects that the pressure of the high-pressure oxygen is greater than or equal to 0.68 MPa, the pressure relief valve 233 is controlled to release the pressure. The oxygen after pressure relief flows to the pressure reducing valve 235 in one direction through the first one-way valve 234. The pressure reducing valve 235 further reduces the pressure of the oxygen after pressure relief to 0.23 MPa to 0.28 MPa.

[0041] See also Figure 1 and Figure 2 In some embodiments, the third pipeline 23 is further provided with a proportional valve 236, a flow stabilizer 237, a first flow sensor 238 and a second one-way valve 239. The proportional valve 236 is used to maintain the oxygen after the pressure reduction by the pressure reducing valve 235 at a certain flow rate. After the oxygen is regulated by the proportional valve 236, the airflow becomes turbulent. In order to ensure the stability of the airflow, a flow stabilizer 237 is added to stabilize the flow of a certain flow of gas. The flow stabilizer 237 can be a copper sintered filter or a pressure swing flow stabilizer. The first flow sensor 238 is electrically connected to the proportional valve 236 to detect the flow of oxygen after the proportional valve 236 is regulated, and to control the proportional valve 236 to regulate the oxygen flow required by the ventilator 100. The second one-way valve 239 is used to prevent the oxygen detected by the first flow sensor 238 from flowing back, so as to avoid interfering with the detection of the first flow sensor 238.

[0042] See also Figure 1 and Figure 2 In some embodiments, the ventilator 100 further includes a mixing line 3. The mixing line 3 is connected to the second gas outlet of the air-oxygen mixer 7 and is used to deliver the mixed gas in the air-oxygen mixer 7 to the user 10 for inhalation. The end of the mixing line 3 can be connected to components such as a nasal mask, a face mask, a nasal cannula or an oral cannula, and the user 10 can inhale the mixed gas of the ventilator 100 by wearing the above components.

[0043] See also Figure 1 and Figure 2 It should be noted that the temperature of the turbo blower 6 may rise when it is working for a long time, which may affect the service life of the turbo blower 6. In some embodiments, the ventilator 100 also includes a temperature sensor 31, which is located on the mixing pipeline 3. The temperature sensor 31 is electrically connected to the turbo blower 6. The temperature sensor 31 is used to control the turbo blower 6 to stop running when it detects that the turbo blower 6 reaches a preset temperature. Since the temperature sensor 31 is located on the mixing pipeline 3, that is, located downstream of the second air outlet of the air-oxygen mixer 7, the temperature sensor 31 can also detect the temperature of the mixed gas transmitted by the air-oxygen mixer 7 to avoid the mixed gas temperature being too high to cause harm to the user 10.

[0044] See also Figure 1 and Figure 2In some embodiments, a mixed gas control component is also provided on the mixing pipeline 3, and the mixed gas control component is used to detect and control the air pressure and flow of the mixed gas. Specifically, the mixed gas control component includes a second flow sensor 32, an oxygen concentration sensor 33, a third one-way valve 34, a bypass air resistor 35, an inhalation pressure sensor 36, an inhalation pressure zeroing valve 37, an electronic safety valve 38 and a mechanical safety valve 39. The second flow sensor 32 is used to detect the flow of the mixed gas, and adopts mainstream oxygen concentration detection. The oxygen concentration sensor 33 is used to detect the oxygen concentration of the mixed gas, and the detection speed is fast. The third one-way valve 34 can prevent the user 10 from exhaling into the mixing pipeline 3. The bypass air resistor 35 is used to balance the airflow pressure at the front and rear ends of the third one-way valve 34. The inhalation pressure sensor 36 is used to detect the gas pressure at the end of the mixing pipeline 3. The inhalation pressure zeroing valve 37 is used to calibrate the pressure value of the inhalation pressure sensor 36. The electronic safety valve 38 can be opened and connected to the external environment when the ventilator 100 fails, so that the user 10 can breathe the external air directly to avoid suffocation. The mechanical safety valve 39 can automatically release the pressure when the pressure of the mixed gas exceeds 100KPa to prevent the mixed gas pressure from being too high and causing harm to the user 10.

[0045] The front end of the exhalation circuit 1 is used to receive the gas exhaled by the user 10, and the front end thereof can be connected to the components such as the nasal mask, face mask, nasal cannula or oral cannula mentioned above.

[0046] See also Figure 1 and Figure 2 In some embodiments, an exhalation gas control component and an exhalation non-positive pressure valve 17 are provided on the exhalation circuit 1. The exhalation gas control component is electrically connected to the exhalation non-positive pressure valve 17, and the exhalation gas control component is used to detect the pressure and flow of the exhaled gas, and control the exhalation non-positive pressure valve 17 to adjust the pressure value of the exhaled gas.

[0047] See also Figure 1 and Figure 2 The exhalation gas control component includes a first pressure sensor zeroing valve 11, a second pressure sensor zeroing valve 12, an exhalation pressure differential sensor 13, and an exhalation pressure sensor 14. The gas exhaled by the user 10 enters the exhalation pressure differential sensor 13 through the first pressure sensor zeroing valve 11 and the second pressure sensor zeroing valve 12. The exhalation pressure differential sensor 13 is used to detect the flow rate of the exhaled gas. The exhalation pressure sensor 14 is used to detect the air pressure of the exhaled gas. The exhalation pressure sensor 14 is electrically connected to the exhalation non-positive pressure valve 17, and is used to control the exhalation non-positive pressure valve 17 to adjust the gas of the exhaled gas to the required exhalation pressure.

[0048] It should be noted that the expiratory non-positive pressure valve 17 is a peep valve (Positive Expiratory End Pressure). The expiratory pressure sensor 14 converts the air pressure signal into an electrical signal and transmits it to the peep valve. The peep valve receives the electrical signal, controls the exhaust gap between its diaphragm and the valve core valve port and the peep value, and thus obtains the required expiratory pressure.

[0049] See also Figure 1 and Figure 2 Furthermore, the exhalation gas control component may also include an exhalation valve air resistor 15 and an inhalation pressure difference flow sensor 16. The exhalation valve air resistor 15 can adjust the flow of the exhaled gas.

[0050] See also Figure 1 and Figure 2 In some embodiments, the ventilator 100 further includes a purge line 4, a purge air resistor 41 and a purge valve 42. The purge air resistor 41 and the purge valve 42 are located on the purge line 4. The purge line 4 is connected to the inhalation line 2 and the third line 23 in the exhalation line 1 at the same time. The purge line 4 is used to inhale at least the high-pressure oxygen in the third line 23 and transmit it to the exhalation line 1 to blow out the accumulated liquid in the exhalation line 1. The purge air resistor 41 is used to control the flow rate of the high-pressure oxygen, and the purge valve 42 is used to control the on-off of the purge line 4.

[0051] See also Figure 1 and Figure 2 Furthermore, the purge line 4 can be connected to the portion of the exhalation line 1 where the exhalation gas control component is located, so as to blow away the accumulated liquid in the section of the exhalation line 1, thereby preventing the accumulated liquid from affecting the detection stability of the exhalation gas control component, especially the exhalation pressure difference sensor 13.

[0052] See also Figure 1 and Figure 2 In some embodiments, the ventilator 100 further includes an atomization pipeline 5, which is connected to the third pipeline 23 of the inhalation pipeline 2, and is used to inhale at least the high-pressure oxygen in the third pipeline 23. The atomization pipeline 5 can be connected to an external nebulizer to perform atomization treatment on the user 10. The atomization pipeline 5 is also provided with an atomization valve 51 and an atomization gas resistor 52, the atomization valve 51 is used to control the on and off of the atomization pipeline 5, and the atomization gas resistor 52 is used to control the flow of the high-pressure oxygen.

[0053] It should be noted that the inhalation pipeline, the exhalation pipeline, the mixing pipeline, the purge pipeline and the atomization pipeline in the embodiment of the present application not only refer to the pipeline structure, but also refer to the channel structure formed by connecting multiple hydraulic components.

[0054] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "located on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A ventilator, characterized in that: include: an inhalation pipeline, used for inhaling air, a first oxygen and a second oxygen, wherein the gas pressures of the first oxygen and the second oxygen are different; A turbo fan, located on the air intake pipeline, the turbo fan comprises a first air inlet and a first air outlet that are connected to each other, the first air inlet is connected to the air intake pipeline and is used to inhale the air; An air-oxygen mixer is located on the air intake pipeline, and includes a second air inlet and a third air inlet that are connected to each other. The second air inlet is connected to the first air outlet, and the third air inlet is connected to the air intake pipeline and is used to inhale the first oxygen or the second oxygen.

2. The ventilator according to claim 1, characterized in that: The air intake pipeline includes a first pipeline, a second pipeline and a third pipeline that are connected to each other. The first pipeline is used to inhale the air, the second pipeline is used to inhale the first oxygen, and the third pipeline is used to inhale the second oxygen. The end of the first pipeline is connected to the first air inlet, and the ends of the second pipeline and the third pipeline are connected to the second air inlet.

3. The ventilator according to claim 2, characterized in that: The ventilator also includes a first pressure sensor and a decompression component located on the third pipeline, the first pressure sensor is electrically connected to the decompression component, and the first pressure sensor is used to control the decompression component to decompress the second oxygen when detecting that the pressure of the second oxygen is greater than a preset pressure value.

4. The ventilator according to claim 3, characterized in that: The ventilator also includes a proportional valve, a flow stabilizer and a first flow sensor located on the third pipeline, the proportional valve is used to control the flow of oxygen after being decompressed by the decompression component, the flow stabilizer is used to stabilize the flow of the oxygen, and the first flow sensor is electrically connected to the proportional valve.

5. The ventilator according to any one of claims 1 to 4, characterized in that: The turbo blower has a constant rotation speed. The ventilator also includes a flow valve located on the inhalation pipeline. The flow valve is used to control the flow and pressure of the mixed gas passing through the air-oxygen mixer.

6. A ventilator according to any one of claims 1 to 4, characterized in that: The ventilator also includes a mixing pipeline and a temperature sensor and a mixed gas control component located on the mixing pipeline. The air-oxygen mixer also includes a second air outlet. The mixing pipeline is connected to the second air outlet and is used to transport the mixed gas in the air-oxygen mixer to the user for inhalation. The temperature sensor is electrically connected to the turbine blower. The mixed gas control component is used to detect and control the air pressure and flow of the mixed gas.

7. A ventilator according to any one of claims 1 to 4, characterized in that: The ventilator further includes an exhalation circuit, a purge circuit, and a purge air resistor and a purge valve located on the purge circuit. The exhalation circuit is used for a user to exhale gas. The purge circuit is connected to the inhalation circuit and the exhalation circuit at the same time. The purge circuit is used to inhale at least the second oxygen in the inhalation circuit and transmit it to the exhalation circuit to blow out the accumulated liquid in the exhalation circuit. The purge air resistor is used to control the flow rate of the second oxygen, and the purge valve is used to control the on-off of the purge circuit.

8. A ventilator according to any one of claims 1 to 4, characterized in that: The ventilator also includes an exhalation circuit and an exhalation gas control component located on the exhalation circuit and an exhalation non-positive pressure valve, wherein the exhalation gas control component is electrically connected to the exhalation non-positive pressure valve, and the exhalation gas control component is used to detect the air pressure and flow of the exhaled gas, and control the exhalation non-positive pressure valve to adjust the air pressure value of the exhaled gas.

9. The ventilator according to any one of claims 1 to 4, characterized in that: The ventilator further includes an atomization pipeline, which is in communication with the inhalation pipeline, and is used to inhale at least the second oxygen in the inhalation pipeline.

10. A ventilator system, characterized in that: The ventilator system comprises a ventilator as claimed in any one of claims 1 to 9.

Images