Anesthetic waste gas processor

Abstract

The present application relates to the technical field of medical apparatus and discloses an anesthetic waste gas processor, which comprises, in sequence from top to bottom along the axial direction, an air inlet pipe, a condensing cover, a converging shell and an air outlet pipe, a water collecting tank is arranged on the outer side of the converging shell and the condensing cover, an activated carbon filter plate is arranged between the air outlet pipe and the converging shell, anesthetic waste gas enters the condensing cavity through the air inlet pipe, the condensed liquid formed after condensation is gathered into the water collecting tank, the anesthetic waste gas enters the converging cavity and is then filtered and adsorbed by the activated carbon filter plate before being discharged along the air outlet pipe, and a rotatable spiral blade is arranged in the condensing cavity of the condensing cover, a spiral channel is formed between the spiral blade and the condensing cover, the spiral channel can prolong the contact path and contact time of the anesthetic waste gas and the inner wall of the condensing cavity, the condensing effect of the anesthetic waste gas is improved, and the spiral blade can also effectively scrape off the condensed liquid condensed on the inner wall of the condensing cavity, thereby improving the gathering efficiency of the condensed liquid gathered into the water collecting cavity.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an anesthetic waste gas processor. Background Technology

[0002] The anesthesia machine delivers anesthetic gas to the patient's lungs. Because the patient cannot completely absorb the anesthetic gas, the unabsorbed gas mixes with waste gases produced by the patient's respiration, forming anesthetic waste gas. This waste gas is exhaled and discharged through the machine's exhaust pipe. Since direct emission of anesthetic waste gas easily pollutes the air, it must be treated.

[0003] The existing principle of anesthetic waste gas processors mainly uses activated carbon filter plates to adsorb anesthetic waste gas to achieve purification. Since the waste gas exhaled by patients contains water vapor, the water vapor will enter the pores of the activated carbon along with the anesthetic waste gas and compete for adsorption sites, thus reducing the activated carbon's adsorption capacity for other gases.

[0004] The anesthetic waste gas treatment device disclosed in the invention patent application with authorization announcement number CN117883911B disclosed by the applicant can effectively remove water vapor entrained in the anesthetic waste gas by having a cooling unit contact the anesthetic waste gas before the filter plate, thus delaying the saturation of the filter plate and improving the effective load capacity of the filter plate.

[0005] However, the above device has the following defects: (1) The contact path between the anesthetic waste gas and the inverted conical metal cover is short, and the condensation time is short, which easily causes the problem of incomplete condensation; (2) After the water vapor is condensed, it adheres to the outer surface of the inverted conical metal cover and can only be collected by airflow, and the collection speed is slow; (3) When the airflow velocity is low, the condensate is easy to condense and flow downward under the action of gravity, and it is difficult to collect into the inverted conical metal cover. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anesthetic waste gas processor. By setting rotating spiral blades in the condensation chamber, the contact path and contact time between the anesthetic waste gas and the inner wall of the condensation chamber are extended, thereby improving the condensation effect of the anesthetic waste gas and effectively scraping off the condensate, making it easier for it to collect in the water collection chamber.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An anesthetic waste gas processor includes a water collection tank. A support is provided at the bottom of the inner side of the water collection tank. A water collection cavity is formed between the support and the water collection tank. A manifold is mounted on the support. A condensation hood is provided on the top of the manifold. The condensation hood includes a top cover and a bottom cover distributed vertically along the axial direction, with a condensation cavity communicating with the water collection cavity between them. The periphery of the top cover is fitted against the inner wall of the water collection tank, and an air inlet pipe communicating with the condensation cavity is installed at the upper end of the top cover. A device rotatably mounted within the condensation cavity... The inner wall of the condensation chamber is fitted with spiral blades, which together with the top cover and the bottom cover form a spiral channel. One end of the spiral channel is connected to the air inlet pipe, and the other end is connected to the water collection chamber. The bottom cover overlaps the top of the manifold shell, and there is a manifold chamber between them that is connected to the water collection chamber. An exhaust pipe is installed at the lower end of the manifold shell. The exhaust pipe is connected to the manifold chamber and extends to the outside of the water collection tank. An activated carbon filter plate is provided between the exhaust pipe and the manifold shell.

[0009] Optionally, a cooling fan is provided below the bottom cover, and a rotating shaft is rotatably mounted on the bottom cover. The upper part of the rotating shaft extends into the condensation chamber and is connected to the spiral blades, and the lower part of the rotating shaft extends into the confluence chamber and is connected to the motor housing of the cooling fan.

[0010] Optionally, a refrigeration unit for cooling the condenser cover is also provided below the bottom cover, the cooling fan is located below the refrigeration unit, and the rotating shaft passes through the refrigeration unit.

[0011] Optionally, the refrigeration unit includes a liquid storage shell connected to the bottom cover, a semiconductor cooler is fixedly installed at the bottom of the liquid storage shell, a support cylinder is provided inside the liquid storage shell, the outer wall of the support cylinder and the liquid storage shell and the bottom cover form a liquid storage cavity, and the rotating shaft passes through the support cylinder and the semiconductor cooler.

[0012] Optionally, the rotating shaft and the support cylinder are rotatably connected by a slip ring, a sealing ring is embedded at the top of the support cylinder, the rotating shaft passes through the sealing ring, and a wire-passing hole for wiring is opened inside the rotating shaft.

[0013] Optionally, a first channel is provided at the lower end of the top cover, and a second channel is provided on the periphery of the manifold shell. The first channel is used to connect the condensation chamber and the water collection chamber, and the second channel is used to connect the water collection chamber and the manifold shell.

[0014] Optionally, the upper edge of the spiral blade is fixedly fitted with a first scraper that fits against the top cover, and the lower edge of the spiral blade is fixedly fitted with a second scraper that fits against the bottom cover.

[0015] Optionally, a support plate is fixedly connected to the upper part of the rotating shaft, and one end of the support plate opposite to the rotating shaft is fixedly connected to the spiral blade.

[0016] Optionally, both the top cover and the bottom cover are frustum-shaped structures, and the spiral blades are located between the bottom cover and the bottom cover in a vortex-like structure.

[0017] Optionally, the connection between the manifold and the exhaust pipe is provided with an inwardly protruding support plate, and the outer edge of the lower end of the activated carbon filter plate overlaps the support plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) In this invention, the anesthetic waste gas enters the condensation chamber along the air inlet pipe, and the condensate formed after condensation is collected in the water collection tank. The anesthetic waste gas enters the manifold and is then filtered and adsorbed by the activated carbon filter plate before being discharged along the exhaust pipe. The condensation chamber is equipped with rotating spiral blades, which, together with the top cover and the bottom cover, form a spiral channel that can prolong the contact path and contact time between the anesthetic waste gas and the inner wall of the condensation chamber, thereby improving the condensation effect of the anesthetic waste gas. At the same time, the spiral blades can effectively scrape off the condensate condensed on the inner wall of the condensation chamber, thereby improving the collection efficiency of the anesthetic waste gas into the water collection chamber.

[0020] (2) In this invention, a rotating shaft is provided on the bottom cover. The upper and lower ends of the rotating shaft are connected to the spiral blades and the motor housing of the cooling fan, respectively. The rotating shaft is driven to rotate by the angular momentum generated when the fan is working, and then the rotating shaft drives the spiral blades to rotate. In this way, the condensate attached to the inner wall of the condensation chamber is scraped off by the spiral blades. This design is ingenious and reasonable, and the working principle is simple. It can reduce the difficulty of arranging the internal electrical wiring and make the overall structure more compact.

[0021] (3) In this invention, the upper and lower edges of the spiral blade are respectively provided with a first scraper and a second scraper. The two scrapers are respectively attached to the inner wall of the condensation chamber. The first scraper and the second scraper can transfer heat to the top cover and the bottom cover respectively and achieve cooling, so that the spiral blade can condense the anesthetic waste gas and improve the overall condensation effect. The first scraper and the second scraper can also be used to scrape the condensate formed on the top cover and the bottom cover from the middle to the outside, which improves the efficiency of the condensate flowing into the water collection chamber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the exploded structure of the anesthetic waste gas processor in an embodiment of the present invention;

[0023] Figure 2 This is an isometric structural diagram of the anesthetic waste gas processor in an embodiment of the present invention;

[0024] Figure 3This is a schematic diagram of the internal structure of the anesthetic waste gas processor in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the positional structure of the helical blades and the support rod in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the condenser cover and the refrigeration unit in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure in an embodiment of the present invention, showing the shaft penetrating the liquid storage shell;

[0028] Figure 7 This is a schematic diagram of the structure of the rotating shaft penetrating the semiconductor cooler in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram showing the position and structure of the semiconductor cooler and heat sink in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the connection between the rotating shaft and the cooling fan in an embodiment of the present invention;

[0031] Among them, 1. Water collection tank; 101. Support; 2. Air inlet pipe;

[0032] 3. Condenser shroud; 301. Top cover; 302. Bottom cover; 303. Support rod; 304. First channel;

[0033] 4. Manifold housing; 401. Second channel; 402. Support plate; 5. Exhaust pipe; 6. Activated carbon filter plate;

[0034] 7. Spiral blades; 701. First scraper; 702. Second scraper; 703. Support plate;

[0035] 8. Shaft; 801. Wire hole; 802. Wire opening;

[0036] 9. Cooling fan; 901. Cooling motor; 902. Fan blades;

[0037] 10. Liquid reservoir; 11. Semiconductor cooler; 12. Heat sink; 13. Support cylinder; 14. Slip ring; 15. Sealing ring. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention and therefore only show the components relevant to the present invention.

[0039] Example 1, as Figures 1-4As shown, an anesthetic waste gas processor includes an inlet pipe 2, a condenser hood 3, a manifold shell 4, and an exhaust pipe 5 arranged sequentially from top to bottom along the axial direction. A water collection tank 1 is provided on the outside of the manifold shell 4. The lower part of the condenser hood 3 is embedded in the water collection tank 1. Both the inlet pipe 2 and the exhaust pipe 5 extend to the outside of the water collection tank 1, and an activated carbon filter plate 6 is provided between the exhaust pipe 5 and the manifold shell 4. The anesthetic waste gas first enters the condenser hood 3 along the inlet pipe 2. After condensation, the condensate formed is collected in the water collection tank 1. The anesthetic waste gas then enters the manifold shell 4, passes through the activated carbon filter plate 6, and is then discharged into the external environment along the exhaust pipe 5, thus avoiding air pollution from the anesthetic waste gas.

[0040] A support 101 is provided at the bottom of the inner side of the water collection tank 1, and the support 101 and the inner wall of the water collection tank 1 form a water collection cavity with an open top. The support 101 has a mounting hole, and the lower part of the manifold 4 is inserted into the mounting hole. The upper and lower ends of the manifold 4 are open, and the exhaust pipe 5 is integrally formed and connected to the lower end of the manifold 4. After the manifold 4 is installed on the support 101, the lower end of the exhaust pipe 5 extends to the outside of the water collection tank 1 through the mounting hole.

[0041] The condenser shroud 3 is made entirely of metal and is attached to the top of the manifold 4. It includes a top cover 301 and a bottom cover 302 that are spaced vertically along the axial direction. The top cover 301 is located above the bottom cover 302, and a condensation chamber is formed between the two. The periphery of the top cover 301 is fitted with the inner wall of the water collection tank 1, and an air inlet pipe 2 that communicates with the condensation chamber is fixedly installed at the upper end of the top cover 301. A first channel 304 for connecting the condensation chamber and the water collection chamber is opened at the lower end of the top cover 301.

[0042] The upper part of the condenser hood 3 is located above the water collection tank 1, so the air inlet pipe 2 is located outside the water collection tank 1; and the lower end of the top cover 301 is connected to the bottom cover 302 through multiple support rods 303. The multiple support rods 303 are arranged in a circular array around the axis of the condenser hood 3, that is, a first channel 304 is formed between two adjacent support rods 303, so that the anesthetic waste gas and condensate in the condensation chamber can pass through the first channel 304 and enter the water collection chamber.

[0043] The bottom cover 302 overlaps the top of the manifold 4, and the two enclose each other to form a manifold cavity. The exhaust pipe 5 is connected to the manifold cavity, and a second channel 401 is opened on the periphery of the manifold 4 to facilitate the connection between the water collection cavity and the manifold cavity, so as to ensure that the condensed anesthetic waste gas flows through the water collection cavity to the manifold cavity.

[0044] A protruding support plate 402 is provided at the connection between the manifold 4 and the exhaust pipe 5. The support plate 402 has a ring-shaped structure. The activated carbon filter plate 6 is clamped at the connection between the lower opening of the manifold 4 and the exhaust pipe 5, and the outer edge of the lower end of the activated carbon filter plate 6 overlaps the support plate 402, thereby realizing the installation of the activated carbon filter plate 6. This facilitates the anesthetic waste gas in the manifold cavity to pass through the activated carbon filter plate 6 and be discharged into the external environment along the exhaust pipe 5.

[0045] As described above, the anesthetic waste gas can be purified by adsorbing it through the activated carbon filter plate 6, and the anesthetic waste gas can be condensed by the condenser hood 3 to remove the water vapor contained in the waste gas, thus preventing water vapor from entering the pores of the activated carbon with the anesthetic waste gas and competing for adsorption sites.

[0046] When the anesthetic exhaust gas enters the condenser hood 3 through the inlet pipe 2, it will first come into contact with the upper surface of the bottom cover 302. Due to the large temperature difference between the condenser hood 3 and the room temperature, the water vapor in the anesthetic exhaust gas is easy to condense on the upper surface of the bottom cover 302 and form water droplets. The water droplets can flow downward along the upper surface of the bottom cover 302 under their own gravity and the blowing of the airflow. Some of the floating anesthetic exhaust gas will come into contact with the lower surface of the top cover 301 and condense to form water droplets.

[0047] Because the entire interior of the condenser hood 3 is in a low-temperature environment, the condensation range is larger, the condensation time is longer, and the condensation effect is more thorough. Furthermore, by coating the outer surface of the top cover 301 with the existing nano-insulation coating, the insulation effect inside the condenser hood 3 can be improved, and the top cover 301 of the condenser hood 3 can be prevented from cooling the water vapor in the environment, thus preventing temperature loss.

[0048] Furthermore, a spiral blade 7 is rotatably installed inside the condensing chamber and fits against the inner wall of the condensing chamber. The spiral blade 7, the top cover 301, and the bottom cover 302 enclose a spiral channel. One end of the spiral channel is connected to the air inlet pipe 2, and the other end is connected to the water collection chamber through the first channel 304.

[0049] Specifically, the spiral blade 7 is coaxial with the condenser hood 3. The anesthetic waste gas flows through the condenser cavity along the spiral channel, which can prolong the contact path and contact time between the anesthetic waste gas and the inner wall of the condenser cavity, thereby improving the condensation effect of the anesthetic waste gas. At the same time, the spiral blade 7 can also effectively scrape off the condensate on the inner wall of the condenser cavity when it rotates by adhering to the condenser wall, thereby improving the collection efficiency of the condensate into the water collection cavity.

[0050] The spiral blades 7 can scrape off the condensate formed on the upper surface of the bottom cover 302 and the lower surface of the top cover 301, which significantly improves the collection efficiency of the condensate. Since the spiral blades 7 divide the condensation chamber of the condensation hood 3 into a spiral channel, the anesthetic waste gas enters the condensation hood 3 and flows and condenses along the spiral channel. Therefore, the contact path and contact time between the anesthetic waste gas and the bottom cover 302 are extended. The rotation of the spiral blades 7 can also make it contact the anesthetic waste gas more fully, thereby improving the condensation effect of the anesthetic waste gas.

[0051] Both the top cover 301 and the bottom cover 302 can adopt a frustum-shaped structure, while the spiral blade 7 is located between the bottom cover 302 and the bottom cover 302, so it can adopt a vortex structure. The frustum-shaped structure ensures that the inner wall of the condensing cavity has a certain taper, which facilitates the condensate to slide freely into the water collection cavity. The spiral blade 7 with the vortex structure can be adapted to the frustum-shaped top cover 301 and bottom cover 302, ensuring that the upper and lower edges of the spiral blade 7 are in contact with the inner wall of the condensing cavity.

[0052] In Example 2, based on Example 1, the present invention also proposes a specific structure for the refrigeration unit.

[0053] like Figure 3 , Figures 5-8 As shown, the cooling unit is located below the bottom cover 302, and a cooling fan 9 is also installed below the cooling unit. Both the cooling unit and the cooling fan 9 are located in the manifold. The cooling unit can cool the condenser 3, improving its condensation effect, while the cooling fan 9 can not only dissipate heat from the condenser 3, but also quickly dissipate the heat generated by the cooling unit, preventing it from flowing back and affecting the temperature of the condenser 3.

[0054] The refrigeration unit includes a liquid storage shell 10, which is fixedly installed at the bottom of the bottom cover 302. The liquid storage shell 10 has an inverted frustum-shaped structure and forms a liquid storage cavity with the bottom cover 302. The liquid storage cavity contains refrigerant. A semiconductor cooler 11 is fixedly installed at the bottom of the liquid storage shell 10. A heat sink 12 is fixedly installed at the bottom of the semiconductor cooler 11. A cooling fan 9 is connected below the heat sink 12.

[0055] Water, which has a high specific heat capacity, can be used as the refrigerant. The cooling surface of the semiconductor cooler 11 is fixedly connected to the bottom surface of the liquid storage tank 10, and the heating surface of the semiconductor cooler 11 is fixedly connected to the heat sink 12. The side of the heat sink 12 opposite to the cooling plate faces the cooling fan 9. When the semiconductor cooler 11 is working, the cooling energy generated by its cooling surface is transferred to the refrigerant in the liquid storage chamber, and then transferred to the condenser shroud 3 through the refrigerant. The heat generated by its heating surface can be quickly discharged into the external environment with the anesthetic waste gas in the manifold under the dual action of the heat sink 12 and the cooling fan 9.

[0056] To prevent the bottom cover 302 of the condenser hood 3 from cooling the anesthetic waste gas in the manifold, the bottom surface of the bottom cover 302 outside the liquid storage chamber and the bottom surface of the liquid storage shell 10 can be coated with an existing nano-thermal insulation coating. Meanwhile, the semiconductor cooler 11 can be used in conjunction with a temperature sensor and a microcontroller. This cooling technology is existing technology and will not be described in detail here.

[0057] In Example 3, based on Example 2, the present invention also proposes a specific structure for driving the helical blade 7 to rotate around its own axis.

[0058] like Figures 3-9 As shown, a rotating shaft 8 is provided on the bottom cover 302. The rotating shaft 8 is coaxial with the condenser cover 3 and can rotate relative to it around its own axis. The upper part of the rotating shaft 8 extends into the condensation cavity and is connected to the spiral blade 7. The lower part of the rotating shaft 8 extends into the confluence cavity and is connected to the motor housing of the cooling fan 9. The rotating shaft 8 passes through the refrigeration unit (semiconductor cooler 11 and radiator 12), and there is a gap between the radiator 12 and the motor housing of the cooling fan 9.

[0059] The cooling fan 9 includes a cooling motor 901 and fan blades 902. The fan blades 902 are fixedly mounted on the output shaft of the cooling motor 901 and are driven by the cooling motor 901 to rotate. The cooling motor 901 of the cooling fan 9 is also coaxial with the condenser cover 3. The lower part of the rotating shaft 8 is fixedly connected to the motor housing, and the upper part of the rotating shaft 8 is fixedly connected to a support plate 703. One end of the support plate 703 opposite to the rotating shaft 8 is fixedly connected to the inner end of the spiral blade 7.

[0060] Specifically, when the cooling fan 9 is started, the angular momentum generated by the rotation of the fan blade 902 can drive the spiral blade 7 to rotate in the opposite direction relative to the fan blade 902 through the rotating shaft 8, thereby realizing the rotation function of the spiral blade 7 around its own axis. Compared with the spiral blade 7 being directly driven by the corresponding motor, this design structure is ingenious and reasonable, the working principle is simple, it can reduce the difficulty of internal electrical wiring layout, make the overall structure more compact, and play a role in reducing costs.

[0061] As described above, a support cylinder 13 is fixedly installed inside the liquid storage shell 10. The liquid storage cavity here is formed by the bottom cover 302, the liquid storage shell 10 and the outer wall of the support cylinder 13. That is, the support cylinder 13 has a channel connecting the condensation cavity and the manifold cavity. The rotating shaft 8 passes through the support cylinder 13, and the rotating shaft 8 and the support cylinder 13 are rotatably connected by a slip ring 14.

[0062] The slip ring 14 consists of a stator housing and a rotor conductive ring. The bottom of the stator housing is connected to a stator terminal, which is used to supply power to the cooling fan 9 that can deflect, thus avoiding winding. The top of the rotor conductive ring is connected to a rotor terminal. The stator housing is fixedly installed on the inner wall of the support cylinder 13, and the rotating shaft 8 is fixedly inserted in the rotor conductive ring.

[0063] The shaft 8 has a wire hole 801 for wiring inside. The upper and lower sides of the wire hole 801 have wire openings 802 for wiring. The power cord of the cooling fan 9 passes through the lower wire opening 802 into the wire hole 801 and exits through the upper wire opening 802 to connect to the rotor terminal. The stator terminal is connected to the power supply by passing the lead wire through the heat sink 12.

[0064] To prevent anesthetic waste gas in the condensation chamber from directly entering the manifold through the inside of the support cylinder 13, a sealing ring 15 is embedded at the top of the support cylinder 13. The rotating shaft 8 passes through the sealing ring 15 and is in clearance fit with its inner hole to ensure the rotation of the rotating shaft 8 while blocking the gas flow.

[0065] Furthermore, the spiral blade 7 is made of a metal material with a certain elastic deformation capability. The inner end of the spiral blade 7 is fixedly connected to the rotating shaft 8 through a support plate 703. The spiral blade 7 rotates counterclockwise from the inside out, and the rotating shaft 8 drives the spiral blade 7 to rotate clockwise.

[0066] The upper edge of the spiral blade 7 is fixedly fitted with a first scraper 701 that fits against the top cover 301, and the lower edge of the spiral blade 7 is fixedly fitted with a second scraper 702 that fits against the bottom cover 302. Both the first scraper 701 and the second scraper 702 are made of thermally conductive silicone. During use, the spiral blade 7 can transfer heat to the top cover 301 and the bottom cover 302 through the first scraper 701 and the second scraper respectively, thereby achieving cooling. This allows the spiral blade 7 to condense the anesthetic waste gas, improving the overall condensation effect. At the same time, the first scraper 701 and the second scraper can be used to scrape the condensate formed on the top cover 301 and the bottom cover 302 from the center to the periphery, improving the efficiency of the condensate flowing into the water collection chamber.

[0067] In addition, a support rod 303 is provided at the lower outer end of the spiral blade 7. During the rotation of the spiral blade 7, the lower outer end of the spiral blade 7 can be intermittently squeezed with multiple support rods 303 distributed along the circumference. The squeezing will cause the spiral blade 7 to vibrate, which will facilitate the shaking off of the condensate on the spiral blade 7 through vibration, and avoid the condensate from affecting the condensation effect of the spiral blade 7 on the anesthetic waste gas.

[0068] In Example 4, based on the above examples, the present invention also proposes specific structures for the water collection tank 1, the condenser cover 3, and the manifold shell 4.

[0069] The water collection tank 1 has an overall ring-shaped structure, and the support 101 inside it also adopts a ring-shaped structure. The upper inner side of the water collection tank 1 and the periphery of the top cover 301 can be fixedly connected by fastening or threaded connection, so that the condenser cover 3 and the water collection tank 1 can be detachably connected. The support 101 is located below the bottom cover 302, and the lower outer edge of the bottom cover 302 protrudes beyond the upper outer edge of the support 101. The lower diameter of the top cover 301 is larger than the lower diameter of the bottom cover 302, ensuring that the condensate can fall smoothly into the water collection chamber.

[0070] The manifold 4 includes a manifold plate, a side plate, and an overlapping plate. The manifold plate has an inverted frustum structure, with its lower end connected to the exhaust pipe 5 and its upper end connected to the annular side plate. The overlapping plate is located above the side plate, and the lower end of the overlapping plate is connected to the upper end of the side plate by multiple support rods arranged in a circumferential array. The second channel 401 is opened between two adjacent support rods. The overlapping plate has a frustum structure, and its upper surface fits against the lower surface of the bottom cover 302, thereby realizing the overlapping of the condenser cover 3 on the manifold 4.

[0071] The support 101 and the side plate can be fixed by means of fastening or threaded connection, so that the manifold 4 can be stably installed on the support 101. At the same time, the water collection tank 1 and the manifold 4 can be disassembled, thereby improving the overall integrity of the device and the stability of the installation of the water collection tank 1.

[0072] To facilitate the production and manufacturing of the various components of the anesthetic waste gas processor, the top cover 301, bottom cover 302 and support rod 303 of the condenser hood 3 can be integrally molded and connected, the support 101 and the water collection tank 1 can be integrally molded and connected, and the manifold shell 4 (including manifold plate, side plate and overlapping plate) and the exhaust pipe 5 can also be integrally molded and connected.

[0073] Furthermore, a transparent liquid level observation window is provided on the outer circumferential surface of the water collection tank 1, and a sealable water outlet is provided at the bottom of the water collection tank 1. The liquid level observation window facilitates the observation of the condensate collection, while the water outlet facilitates the drainage of the collected condensate.

[0074] In addition, a pressure sensor for detecting air pressure is installed inside the manifold 4, and an alarm is installed outside the anesthetic waste gas processor. The connecting wires of the pressure sensor, the leads of the stator terminals, and the leads of the semiconductor cooler 11 can be routed sequentially along the support rod and the support rod 303 and then pass through to the outside of the top cover 301. The connecting wire of the pressure sensor is connected to the controller of the alarm after passing through, and the passage can be sealed by filling with a rubber ring.

[0075] When the activated carbon filter plate 6 approaches saturation, the air pressure inside the manifold 4 increases. When the air pressure sensor detects that the air pressure has risen to the set value, it controls the alarm to sound, thus reminding the user to replace the activated carbon filter plate 6 and ensuring the normal operation of the device.

[0076] Working principle:

[0077] The refrigeration unit can cool the condenser 3 to ensure that the temperature of the condenser 3 has a large temperature difference with the room temperature. The anesthetic waste gas enters the condenser 3 through the inlet pipe 2 and first contacts the upper surface of the bottom cover 302. The water vapor in the anesthetic waste gas condenses on the upper surface of the bottom cover 302 and forms water droplets. The water droplets can flow downward along the upper surface of the bottom cover 302 under their own gravity and the blowing of the airflow. Some of the floating anesthetic waste gas will contact the lower surface of the top cover 301 and condense to form water droplets.

[0078] When the cooling fan 9 is working, the angular momentum generated by the rotation of the fan blade 902 can drive the spiral blade 7 to rotate in the opposite direction relative to the fan blade 902 through the rotating shaft 8, thereby realizing the rotation of the spiral blade 7 around its own axis. When the spiral blade 7 rotates, it can scrape off the condensate formed on the upper surface of the bottom cover 302 and the lower surface of the top cover 301. Furthermore, the spiral blade 7 divides the condensation chamber of the condensation hood 3 into a spiral channel. The anesthetic exhaust gas enters the condensation hood 3 and flows and condenses along the spiral channel. Therefore, the contact path and contact time between the anesthetic exhaust gas and the bottom cover 302 are extended. The rotation of the spiral blade 7 can also make it more fully in contact with the anesthetic exhaust gas, thereby improving the condensation effect of the anesthetic exhaust gas.

[0079] The scraped condensate and uncondensed anesthetic waste gas enter the water collection tank 1 through the first channel 304. The condensate enters the water collection chamber due to its own gravity, while the anesthetic waste gas enters the manifold chamber of the manifold shell 4 through the second channel 401, passes through the activated carbon filter plate 6, and is then discharged into the external environment through the exhaust pipe 5.

[0080] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0082] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0083] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An anaesthetic waste gas processor characterised in that: The utility model provides a condensing cover, the condensing cover includes top cover and bottom cover, and the top cover and bottom cover are distributed up and down along the axial direction, and the condensing cavity is communicated with the water collecting cavity, and the top cover is combined with the inner wall of the water collecting tank, and the upper end of the top cover is provided with the air inlet pipe communicated with the condensing cavity. The spiral blade is rotatably installed in the condensing cavity and combined with the inner wall of the condensing cavity, and the spiral channel is formed between the spiral blade, the top cover and the bottom cover, one end of the spiral channel is communicated with the air inlet pipe, and the other end is communicated with the water collecting cavity. The bottom cover is overlapped on the top of the confluence shell, and the confluence cavity is communicated with the water collecting cavity between the bottom cover and the confluence shell, the lower end of the confluence shell is provided with the exhaust pipe communicated with the confluence cavity and extending to the outside of the water collecting tank, and the active carbon filter plate is arranged between the exhaust pipe and the confluence shell.

2. The anesthetic waste gas disposal unit of claim 1, wherein: The lower end of the bottom cover is provided with the heat dissipation fan, the rotating shaft is rotatably installed on the bottom cover, the upper part of the rotating shaft extends into the condensing cavity and is connected with the spiral blade, and the lower part of the rotating shaft extends into the confluence cavity and is connected with the motor shell of the heat dissipation fan.

3. The anesthetic waste gas disposal unit of claim 2, wherein: The lower end of the bottom cover is provided with the refrigeration unit for refrigerating the condensing cover, the heat dissipation fan is arranged below the refrigeration unit, and the rotating shaft penetrates the refrigeration unit.

4. The anesthetic waste gas concentrator of claim 3, wherein: The refrigeration unit includes the liquid storage shell connected with the bottom cover, the bottom of the liquid storage shell is fixedly provided with the semiconductor refrigerator, the inside of the liquid storage shell is provided with the supporting cylinder, the outer wall of the supporting cylinder is combined with the liquid storage shell and the bottom cover to form the liquid storage cavity, and the rotating shaft penetrates the supporting cylinder and the semiconductor refrigerator.

5. The anesthetic waste gas concentrator of claim 4, wherein: The rotating shaft and the supporting cylinder are rotatably connected through the slip ring, the top of the supporting cylinder is embedded with the blocking ring, the rotating shaft penetrates the blocking ring, and the inside of the rotating shaft is provided with the threading hole for wiring.

6. The anesthetic waste gas disposal unit of claim 1, wherein: The lower end of the top cover is provided with the first channel, the periphery of the confluence shell is provided with the second channel, the first channel is used for communicating the condensing cavity and the water collecting cavity, and the second channel is used for communicating the water collecting cavity and the confluence cavity.

7. The anesthetic waste gas disposal unit of claim 2, wherein: The upper edge of the spiral blade is fixedly provided with the first scraper combined with the top cover, and the lower edge of the spiral blade is fixedly provided with the second scraper combined with the bottom cover.

8. The anesthetic waste gas disposal unit of claim 7, wherein: The upper part of the rotating shaft is fixedly connected with the supporting plate, and the end of the supporting plate opposite to the rotating shaft is fixedly connected with the spiral blade.

9. The anesthetic waste gas disposal unit of claim 1, wherein: The top cover and the bottom cover are both circular truncated cone structures, and the spiral blade is in a vortex structure between the bottom cover and the bottom cover.

10. The anesthetic waste gas disposal unit of claim 1, wherein: The connecting part of the confluence shell and the exhaust pipe is provided with the inwardly protruding supporting plate, and the outer edge of the lower end of the active carbon filter plate is overlapped on the supporting plate.

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