Gas-liquid separation device and monitor

Abstract

The utility model discloses a gas-liquid separation device, which comprises a lower cover, the end face of the lower cover is provided with a first flow channel distributed in an arc shape, the initial end of the first flow channel is provided with an air inlet hole used for injecting end-expiratory gas into the first flow channel, and the tail end of the first flow channel is provided with a water outlet used for discharging water drops in the first flow channel; the sealing cover is fixed to the lower cover, the end face, facing the first flow channel, of the sealing cover is provided with a second flow channel corresponding to the first flow channel, the starting end and the tail end of the second flow channel correspond to the starting end and the tail end of the first flow channel respectively, and the tail end of the second flow channel is provided with an air outlet hole used for exhausting end expiratory gas in the second flow channel; the hydrophobic membrane is clamped between the first flow channel and the second flow channel, and is used for filtering moisture in the end-expiratory gas, isolating water drops and gathering the water drops in the first flow channel; the water collecting cup is located on the lower side of the lower cover and used for receiving water drops discharged from the water outlet. Water vapor can be effectively removed, and the problems that existing equipment is tedious in installation, and water vapor affects a measurement result are solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical monitoring devices, and in particular to a gas-liquid separation device. In addition, the present application also relates to a monitoring instrument including the gas-liquid separation device. Background Art

[0002] Plug-in monitors can generally be connected with corresponding plug-in modules to expand the functions of the monitor, so that medical units can monitor patients' ECG, heart rate, respiration, blood pressure, blood oxygen saturation, pulse, body temperature and other items during monitoring.

[0003] The end-of-exhalation plug-in module is used in operating rooms, wards, ICUs, etc. to continuously measure the carbon dioxide concentration and respiratory rate in the respiratory gas during anesthesia, recovery and respiratory care, monitor the patient's physiological parameters, and provide relevant information in a timely manner to help medical staff make accurate diagnosis and treatment. However, during use, since the gas exhaled by the human body is warm and humid, the water vapor in it condenses when it is cold, blocking the pipeline and affecting subsequent measurements. Some of the water vapor enters the monitor analysis system and may also cause a short circuit in the equipment.

[0004] Therefore, in view of the above technical problems, how to effectively remove water vapor and ensure the gas-liquid separation device for measurement results is a technical problem that technical personnel in this field need to solve. Utility Model Content

[0005] The purpose of this application is to provide a gas-liquid separation device that can effectively remove water vapor and solve the problems of cumbersome installation of existing equipment and water vapor affecting measurement results.

[0006] To achieve the above objectives, the present application provides a gas-liquid separation device, comprising:

[0007] The lower cover has an end surface provided with a first flow channel distributed in an arc shape, an air inlet for injecting end-expiratory gas into the first flow channel is provided at the beginning of the first flow channel, and a water outlet for discharging water droplets in the first flow channel is provided at the end of the first flow channel;

[0008] A sealing cover is fixed on the lower cover, and a second flow channel corresponding to the first flow channel is provided on the end surface of the sealing cover facing the first flow channel, the starting end and the end of the second flow channel respectively correspond to the starting end and the end of the first flow channel, and an outlet hole for discharging gas in the second flow channel is provided at the end of the second flow channel;

[0009] A hydrophobic membrane, sandwiched between the first flow channel and the second flow channel, for filtering water in the end-of-tidal gas and isolating and gathering the water droplets in the first flow channel;

[0010] The water collecting cup is located at the lower side of the lower cover and is sealed therewith, and is used for receiving the water drops discharged from the water outlet.

[0011] Preferably, a V-shaped groove is formed on the end surface of the lower cover, and the V-shaped groove includes a first V-shaped groove located inside the first flow channel and distributed in an annular shape, a second V-shaped groove located outside the first flow channel and distributed in an annular shape, and a third V-shaped groove located between the starting end and the end end of the first flow channel and connecting the first V-shaped groove and the second V-shaped groove;

[0012] A triangular rib matching the V-shaped groove is arranged on the end surface of the lower cover facing the first flow channel, and the triangular rib is used to press the hydrophobic membrane into the V-shaped groove so that the first flow channel and the second flow channel constitute independent water filtering channels.

[0013] Preferably, the longitudinal cross-section of any part of the first flow channel and / or the second flow channel is a smooth arc shape.

[0014] Preferably, the air inlet hole is arranged perpendicularly to the first flow channel, and an air inlet channel communicating with the air inlet hole is arranged on the lower cover, and a Luer connector is arranged at the end of the air inlet channel;

[0015] The air outlet hole is vertically arranged with respect to the second flow channel, and an air outlet channel communicating with the air outlet hole is arranged on the sealing cover, and the air outlet channel is externally connected to a monitor.

[0016] Preferably, the inner wall of the air outlet channel is a stepped columnar structure, and the inner cylinder is interference fit with a PE sintered filter element, and the outer cylinder is interference fit with a silicone sleeve for connecting to the monitor.

[0017] Preferably, a first ultrasonic welding line for sealing and welding with the lower cover is arranged on the outer periphery of the sealing cover, a cup cover for wrapping the sealing cover is arranged on the lower cover, and a U-shaped rib adapted to the U-shaped groove of the silicone sleeve is provided on the cup cover.

[0018] Preferably, a detection position is provided on the water collecting cup or the lower cover, and a detection connector corresponding to the detection position is provided on the monitor for detecting whether the water collecting cup or the lower cover is in place.

[0019] Preferably, the lower side of the lower cover is provided with an outer wall extending downward and an inner wall located inside the outer wall, the side wall of the water collecting cup extends between the outer wall and the inner wall and has an interference fit, and an O-ring is provided on the side wall of the water collecting cup to cooperate with the inner wall or the outer wall.

[0020] Preferably, the inner side wall is provided with two copper rod probes for detecting the water level in the water collecting cup, and the monitor is provided with a liquid level probe cooperating with the two copper rod probes to detect the water level in the water collecting cup.

[0021] A monitor, comprising:

[0022] Gas line interface;

[0023] A gas-liquid separation device, which is any one of the gas-liquid separation devices described above, wherein the gas outlet of the gas-liquid separation device is connected to the gas path interface and is used to receive the gas after gas-liquid separation;

[0024] A bottom support is used to stably place the gas-liquid separation device.

[0025] Compared with the above background technology, the first flow channel and the second flow channel of the present application form a water filtering channel. The gas exhaled by the patient enters the first flow channel through the air inlet and flows in the first flow channel. The first flow channel is distributed in an arc shape, which can avoid gas turbulence when the high-speed flowing gas turns sharply. At the same time, the water in the first flow channel is filtered by a hydrophobic membrane. The filtered gas can enter the second flow channel and be discharged to the monitor through the air outlet. The gas at the beginning of the first flow channel has a higher air flow velocity, which drives some of the condensed water droplets to flow along the arc. In this process, part of the gas is filtered and enters the second flow channel. The lower the air flow velocity and the higher the humidity of the first flow channel, the gas is completely filtered at the end. The remaining water droplets gather at the water outlet. Under the action of gravity, the water droplets flow into the water collection cup along the water outlet. The dry gas on the other side enters the monitor along the air outlet to complete the gas-liquid separation. Therefore, the gas-liquid separation device set in the above manner can effectively remove water vapor and solve the problems of cumbersome installation of existing equipment and water vapor affecting measurement results.

[0026] Specifically, the present application includes a lower cover, a sealing cover, a hydrophobic membrane and a water collecting cup. The upper end surface of the lower cover is provided with a first flow channel distributed in an arc shape. The starting end of the first flow channel is provided with an air inlet for injecting end-expiratory gas into the first flow channel, and the end of the first flow channel is provided with a water outlet for discharging water droplets in the first flow channel; the sealing cover is fixed on the lower cover, and the end surface of the sealing cover facing the first flow channel is provided with a second flow channel corresponding to the first flow channel, the starting end and the end of the second flow channel respectively correspond to the starting end and the end of the first flow channel, and an air outlet for discharging gas in the second flow channel is provided at the end of the second flow channel. The hydrophobic membrane is clamped between the first flow channel and the second flow channel, and is used to filter the moisture in the end-tidal gas, and isolate and gather the water droplets in the first flow channel; it should be noted that since the monitor will generate a certain negative pressure at the air outlet, the gas in the first flow channel will continue to flow through the hydrophobic membrane to the second flow channel, while the moisture is filtered out by the hydrophobic membrane and remains in the first flow channel, and finally discharged through the outlet and gathered in the water collection cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of the gas-liquid separation device and the monitor provided in the embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of a gas-liquid separation device provided in an embodiment of the present application;

[0030] Figure 3 An exploded diagram of a gas-liquid separation device provided in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of the lower cover structure provided in an embodiment of the present application;

[0032] Figure 5 A schematic diagram of the sealing cover structure provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of the cup cover structure provided in an embodiment of the present application;

[0034] Figure 7 A cross-sectional view of a gas-liquid separation device provided in an embodiment of the present application.

[0035] In the figure: 1, monitor 11, gas circuit interface 12, liquid level probe 13, detection joint 14, bottom bracket;

[0036] 2. Gas-liquid separation device;

[0037] 21. cup cover 211. ultrasonic connection 212. U-shaped rib;

[0038] 22, lower cover 220, air inlet 221, first flow channel 222, second ultrasonic welding line 223, V-shaped groove 224, through hole 225, hand-held position 226, water outlet 227, positioning block 228, outer wall 229, inner wall;

[0039] 23. water collecting cup 231. detection position 232. O-ring;

[0040] 24, sealing cover 241, air outlet channel 242, PE sintered filter element 243, silicone sleeve 244, first ultrasonic welding line 245, air outlet hole 246, triangular rib 247, second flow channel 248, positioning groove;

[0041] 25. Hydrophobic membrane;

[0042] 26. Air intake passage;

[0043] 27. Luer connector;

[0044] 28. Copper rod probe;

[0045] 29. Drainage column. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0049] like Figure 1 As shown, in this embodiment, a gas-liquid separation device is provided, which can be used in conjunction with the plug-in module of the monitor 1 to filter out moisture in the patient's end-tidal gas to prevent moisture from affecting the monitor 1 itself and the measurement results.

[0050] Specifically, please refer to Figure 2 and Figure 3 The gas-liquid separation device 2 of the present application includes a lower cover 22, a sealing cover 24, a hydrophobic membrane 25 and a water collecting cup 23. A first flow channel 221 distributed in an arc shape is arranged on the end surface of the lower cover 22. The arc shape can be a fan ring structure with unclosed ends, and the two ends of the first flow channel 221 are respectively called the starting end and the end end. Of course, the starting end and the end end can be interchangeable, as long as the relative relationship between the two is ensured, and no excessive restrictions are imposed here.

[0051] Please refer to Figure 4The first flow channel 221 has an air inlet 220 at its beginning for injecting end-expiratory gas into the first flow channel 221, and a water outlet 226 at its end for discharging water droplets in the first flow channel 221. Generally speaking, the patient's end-expiratory gas enters the first flow channel 221 through the air inlet 220.

[0052] A sealing cover 24 is fixed on the lower cover 22, and the sealing cover 24 covers the position of the first flow channel 221. A second flow channel 247 corresponding to the first flow channel 221 is opened on the end surface of the sealing cover 24 facing the first flow channel 221, that is, the shape and position of the second flow channel 247 are the same as those of the first flow channel 221, and the starting end and the end end of the second flow channel 247 correspond to the starting end and the end end of the first flow channel 221 respectively; similarly, the starting end and the end end of the second flow channel 247 also emphasize the correspondence with the first flow channel 221, which will not be described in detail here.

[0053] Please refer to Figure 5 The end of the second flow channel 247 is provided with an air outlet 245 for exhausting gas, and the position of the air outlet 245 corresponds to the position of the water outlet 226. The hydrophobic membrane 25 is clamped between the first flow channel 221 and the second flow channel 247, that is, between the lower cover 22 and the sealing cover 24, and can filter the moisture in the end-tidal gas and isolate and gather the water droplets in the first flow channel 221. The air outlet 245 is usually connected to the monitor 1, so as to effectively prevent moisture from entering the monitor 1.

[0054] A water collecting cup 23 is sealed at the lower side of the lower cover 22 and can receive water drops discharged from the water outlet 226 .

[0055] It should be noted that in order to facilitate the water droplets to flow toward the water outlet 226, a certain horizontal height difference can be set between the water outlet 226 and the air inlet 220, that is, the first flow channel 221 can have a certain degree of inclination, so that the water droplets can gradually flow toward the water outlet 226 by utilizing their own gravity.

[0056] In summary of the above embodiments, the present application utilizes the first flow channel 221 and the second flow channel 247 to form a water filtration channel. The end-tidal gas exhaled by the patient enters the first flow channel 221 through the air inlet 220 and flows in the first flow channel 221. The first flow channel 221 is distributed in an arc shape, which can avoid gas turbulence when the high-speed flowing end-tidal gas makes a sharp turn. At the same time, the hydrophobic membrane 25 is used to filter the moisture in the first flow channel 221. The filtered end-tidal gas can enter the second flow channel 247 and be discharged to the monitor 1 through the air outlet 245, while the moisture remains in the first flow channel 221. In addition, the gas at the beginning of the first flow channel 221 has a higher airflow velocity, thereby driving some of the condensed water droplets to flow along the arc. During this process, some of the end-expiratory gas can still enter the second flow channel 247 through the hydrophobic membrane 25. The lower the airflow velocity and the higher the humidity of the first flow channel 221, the lower the end. Finally, all the end-expiratory gas is filtered, and the remaining water droplets gather at the water outlet 226. Under the action of gravity, the water droplets flow along the water outlet 226 into the water collection cup 23, and the dry end-expiratory gas on the other side flows into the monitor 1 along the air outlet to complete the gas-liquid separation. Therefore, the gas-liquid separation device 2 set in the above manner can effectively remove water vapor and solve the problems of cumbersome installation of existing equipment and water vapor affecting measurement results.

[0057] In addition, please refer to Figure 4 and Figure 5 In order to avoid the influence of external gas and the air cross-talk between the air inlet 220 and the air outlet 245, a V-shaped groove 223 is opened on the end surface of the lower cover 22, and the V-shaped groove 223 includes a first V-shaped groove located on the inner side of the first flow channel 221 and distributed in a ring shape, a second V-shaped groove located on the outer side of the first flow channel 221 and distributed in a ring shape, and a third V-shaped groove located between the starting end and the end end of the first flow channel 221 and connecting the first V-shaped groove and the second V-shaped groove.

[0058] A triangular rib 246 cooperating with the V-shaped groove 223 is provided on the end surface of the lower cover 22 facing the first flow channel 221. The triangular rib 246 can press the hydrophobic membrane 25 in the V-shaped groove 223, so that the first flow channel 221 and the second flow channel 247 constitute independent water filtering channels, preventing external gas from affecting the water filtering channels and preventing gas from mixing between the air inlet 220 and the air outlet 245.

[0059] In addition, the longitudinal cross-section of any part of the first flow channel 221 and / or the second flow channel 247 is smooth and circular arc-shaped, which can improve the flow efficiency of water droplets in the first flow channel 221. At the same time, the arc-shaped first flow channel 221 and the second flow channel 247 can avoid gas turbulence when the high-speed end-expiratory gas turns sharply, and at the same time, the water filter channel is appropriately lengthened to increase the contact area between the end-expiratory gas and the hydrophobic membrane 25. The analysis system in the monitor 1 evacuates air to form a negative pressure in the air outlet 245 and the second flow channel 247, and the end-expiratory gas continuously flows into the air inlet 220, and a positive pressure is generated in the first flow channel 221, and a concentration gradient is formed between the two. The further to the rear end, the less the end-expiratory gas in the first flow channel 221, and the water vapor remains unchanged. The further to the rear end, the lower the air flow velocity and the higher the humidity. After the dry end-expiratory gas enters the second flow channel 247, it flows into the monitor 1. The water vapor in the first flow channel 221 gathers to form water droplets, which flow into the water collection cup 23 from the water outlet 226.

[0060] In order to prevent water drops from clogging the water outlet 226 , a drainage column 29 may be provided below the water outlet 226 .

[0061] The air inlet 220 is vertically arranged with the first flow channel 221, and an air inlet channel 26 connected with the air inlet 220 is arranged on the lower cover 22, and a Luer connector 27 is arranged at the end of the air inlet channel 26, and a sampling tube is externally connected through the Luer connector 27 for the patient to exhale; the air outlet 245 is vertically arranged with the second flow channel 247, and an air outlet channel 241 connected with the air outlet 245 is arranged on the sealing cover 24, and the air outlet channel 241 is externally connected with the monitor 1 to allow the dry end-expiratory gas after the moisture is filtered to enter the monitor 1.

[0062] Please refer to Figure 3 The inner wall of the air outlet channel 241 is a stepped columnar structure, the inner cylinder is interference-fitted with the PE sintered filter element 242, and the outer cylinder is interference-fitted with a silicone sleeve 243 for connecting the monitor 1. The other end of the silicone sleeve 243 is interference-fitted with the air path interface 11 to maintain the sealing effect.

[0063] Due to the special properties of the hydrophobic membrane 25, it must be kept flat during use. Other fixing methods such as screws and buckles will cause local stress to be too large, affecting the use effect of the hydrophobic membrane 25. Therefore, this application uses ultrasonic welding to connect. Please refer to Figure 5 The outer periphery of the sealing cover 24 is provided with a first ultrasonic welding line 244 for sealing and welding with the lower cover 22. The sealing cover 24 and the lower cover 22 are fixed by ultrasonic welding, and the first ultrasonic welding line 244 evenly surrounds the lower cover 22, thereby achieving a sealing effect. Similarly, the lower cover 22 and the cup cover 21 can also be ultrasonically welded. Please refer to Figure 4 A discontinuous second ultrasonic welding line 222 is provided on the outer edge of the lower cover 22, so as to correspond to the ultrasonic connection point 211 of the cup cover 21, thereby achieving a fixed connection between the two.

[0064] The cup cover 21 can wrap the sealing cover 24, but the cup cover 21 does not participate in the gas sealing and only needs to be fixed. Figure 3 and Figure 6 At the same time, a U-shaped rib 212 adapted to the U-shaped groove of the silicone sleeve 243 is opened on the cup cover 21. The U-shaped rib 212 can play a certain fixing role on the silicone sleeve 243 to maintain the connection stability between the silicone sleeve 243 and the air path interface 11.

[0065] It should be noted that in order to facilitate the rapid correspondence between the sealing cover 24 and the lower cover 22, that is, the first flow channel 221 corresponds to the second flow channel 247, and the V-shaped groove 223 corresponds to the triangular rib 246, a plurality of positioning blocks 227 are provided on the lower cover 22, and a plurality of positioning grooves 248 are opened on the outer periphery of the sealing cover 24. The positioning blocks 227 and the positioning grooves 248 match each other, so that the sealing cover 24 and the lower cover 22 can be quickly installed in correspondence.

[0066] Please refer to Figure 3 , a detection position 231 is provided on the water collection cup 23 or the lower cover 22, and a detection connector 13 corresponding to the detection position 231 is provided on the monitor 1, which is used to detect whether the water collection cup 23 or the lower cover 22 is in place. Specifically, the contact and separation of the detection connector 13 and the detection position 231 will generate different voltages. When the detection position 231 and the detection connector 13 are in contact, the detection connector 13 outputs a high level, the signal is fed back to the circuit board, the circuit board sends corresponding control information to the air pump, and the buzzer can give a prompt, such as a voice prompt such as "detection starts". When the detection position 231 and the detection connector 13 are not in contact, the detection connector 13 outputs a low level, the signal is fed back to the circuit board, the circuit board controls the air pump to remain in a closed state, and the buzzer can give a prompt, such as a voice prompt such as "contact is not in place". When the detection position 231 is not in contact with the body position detection connector 13, the body position detection connector 13 does not output a potential, the signal is fed back to the circuit board, and the circuit board controls the air pump to remain in a closed state.

[0067] Please refer to Figure 7 The lower side of the lower cover 22 is provided with an outer wall 228 extending downward and an inner wall 229 located on the inner side of the outer wall 228. The side wall of the water collecting cup 23 extends between the outer wall 228 and the inner wall 229 and is interference fit. An O-ring 232 is provided on the side wall of the water collecting cup 23 to cooperate with the inner wall 229 or the outer wall 228.

[0068] Furthermore, a smooth transition can be made at the bottom of the inner wall 229, and the thickness gradually decreases. The mouth of the water collecting cup 23 adapted thereto also has a smooth transition and an increased thickness. During loading and unloading, the change in thickness can prevent the O-ring 232 on the limiting groove from falling off.

[0069] In addition, two through holes 224 are provided on the lower cover 22, and two copper rod probes 28 are located in the two through holes 224 and are provided on the inner side wall 229. The copper rod probes 28 can be integrally injection molded with the inner side wall 229. When the gas-liquid separation device 2 is installed in place, the two liquid level probes 12 contact the two copper rod probes 28 to achieve electrical connection; when the water level in the water collection cup 23 reaches the preset position, the water level contacts the two copper rod probes 28 at the same time, and the two copper rods are connected to transmit the signal back to the circuit board, and the circuit board controls the buzzer to issue a prompt, such as a voice prompt such as "The water cup is full, please clean it in time", to prevent the water collected in the water collection cup 23 from being re-mixed into the measured end-tidal gas and affecting subsequent measurements.

[0070] This application also provides a monitor, please refer to Figure 1 The monitor 1 includes an air circuit interface 11, a gas-liquid separation device 2, a base 14, and other necessary systems, circuit boards, and other components that constitute the monitor 1. The gas-liquid separation device 2 is any of the above-mentioned gas-liquid separation devices 2. The gas-liquid separation device 2 is stably placed on the base 14, and its gas outlet 245 is connected to the air circuit interface 11 to receive the end-tidal gas after gas-liquid separation, so as to analyze the end-tidal gas through the monitor 1. At the same time, a hand-held position 225 can be set on the side wall of the lower cover 22 to facilitate the placement of the gas-liquid separation device 2.

[0071] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0072] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A gas-liquid separation device, characterized in that: include: The lower cover has an end surface provided with a first flow channel distributed in an arc shape, an air inlet for injecting end-expiratory gas into the first flow channel is provided at the beginning of the first flow channel, and a water outlet for discharging water droplets in the first flow channel is provided at the end of the first flow channel; A sealing cover is fixed on the lower cover, and a second flow channel corresponding to the first flow channel is provided on the end surface of the sealing cover facing the first flow channel, the starting end and the end of the second flow channel respectively correspond to the starting end and the end of the first flow channel, and an outlet hole for discharging gas in the second flow channel is provided at the end of the second flow channel; A hydrophobic membrane, sandwiched between the first flow channel and the second flow channel, for filtering water in the end-of-tidal gas and isolating and gathering the water droplets in the first flow channel; The water collecting cup is located at the lower side of the lower cover and is sealed therewith, and is used for receiving the water drops discharged from the water outlet.

2. The gas-liquid separation device according to claim 1, characterized in that: The end surface of the lower cover is provided with a V-shaped groove, wherein the V-shaped groove includes a first V-shaped groove located inside the first flow channel and distributed in an annular shape, a second V-shaped groove located outside the first flow channel and distributed in an annular shape, and a third V-shaped groove located between the starting end and the end end of the first flow channel and connecting the first V-shaped groove and the second V-shaped groove; A triangular rib matching the V-shaped groove is arranged on the end surface of the lower cover facing the first flow channel, and the triangular rib is used to press the hydrophobic membrane into the V-shaped groove so that the first flow channel and the second flow channel constitute independent water filtering channels.

3. The gas-liquid separation device according to claim 1, characterized in that: The longitudinal cross-section of any part of the first flow channel and / or the second flow channel is in the shape of a smooth arc.

4. The gas-liquid separation device according to any one of claims 1 to 3, characterized in that: The air inlet hole is arranged perpendicularly to the first flow channel, and an air inlet channel communicating with the air inlet hole is arranged on the lower cover, and a Luer connector is arranged at the end of the air inlet channel; The air outlet hole is vertically arranged with respect to the second flow channel, and an air outlet channel communicating with the air outlet hole is arranged on the sealing cover, and the air outlet channel is externally connected to a monitor.

5. The gas-liquid separation device according to claim 4, characterized in that: The inner wall of the air outlet channel is a stepped columnar structure, and the inner cylinder is interference-fitted with a PE sintered filter element, and the outer cylinder is interference-fitted with a silicone sleeve for connecting to the monitor.

6. The gas-liquid separation device according to claim 5, characterized in that: The outer periphery of the sealing cover is provided with a first ultrasonic welding line for sealing and welding with the lower cover, the lower cover is provided with a cup cover for wrapping the sealing cover, and the cup cover is provided with a U-shaped rib adapted to the U-shaped groove of the silicone sleeve.

7. The gas-liquid separation device according to claim 4, characterized in that: The water collecting cup or the lower cover is provided with a detection position, and the monitor is provided with a detection connector corresponding to the detection position for detecting whether the water collecting cup or the lower cover is in place.

8. The gas-liquid separation device according to claim 4, characterized in that: The lower side of the lower cover is provided with an outer wall extending downward and an inner wall located inside the outer wall, the side wall of the water collecting cup extends between the outer wall and the inner wall and is interference fit, and an O-ring is provided on the side wall of the water collecting cup to cooperate with the inner wall or the outer wall.

9. The gas-liquid separation device according to claim 8, characterized in that: The inner wall is provided with two copper rod probes for detecting the water level in the water collecting cup, and the monitor is provided with a liquid level probe cooperating with the two copper rod probes to detect the water level in the water collecting cup.

10. A monitor, characterized in that: include: Gas line interface; A gas-liquid separation device, which is the gas-liquid separation device according to any one of claims 1 to 9, wherein the gas outlet of the gas-liquid separation device is connected to the gas path interface for receiving the gas after gas-liquid separation; A bottom support is used to stably place the gas-liquid separation device.

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