50 results about "Airway structure" patented technology

The application discloses an air passage structure and an electronic atomizer. The air passage structure comprises a plate body, a communication hole, a communication channel, a first air outlet and a second air outlet. The plate body comprises a first plate surface and a second plate surface facing away from each other. The communication hole, the first air outlet and the second air outlet are respectively arranged in the plate body and penetrate through the first plate surface and the second plate surface. The communication hole is used for communicating with the outside atmosphere. The communication channel is formed in the first plate surface and / or the second plate surface. The first air outlet is used for communicating with a suction nozzle of the atomizer. The communication hole, the communication channel and the first air outlet are sequentially connected to form a first air passage capable of connecting and awakening a sensing component of the atomizer. The second air outlet is used for communicating with a mist suction channel of the atomizer and the outside atmosphere. The second air outlet is connected to the first air outlet. The air passage structure can improve the sensitivity of awakening the sensing component to start.

This utility model relates to the field of laser welding technology, specifically disclosing a laser welding gun and laser welding equipment with a gas channel structure. The welding gun includes a working part and a gun barrel. The working part has a gas supply channel with an inlet at its input end, which is connected to a gas source. The working part has an output port connected to the gas source, and the output end of the gas supply channel is connected to the output port via an outlet channel, which connects the gas supply channel and the output port. The gun barrel is detachably connected to the working part, and the output port is connected to the input end of the gun barrel. This welding method solves the problem of potential impact damage to externally located gas channels, improves the structural stability, durability, and operational safety of the equipment, and ensures welding quality and energy transfer efficiency.

The utility model relates to an aerosol generating device which comprises a shell, a suction nozzle and a filter tip, wherein the suction nozzle and the filter tip are used for a user to suck; a heating cavity is formed in the inner side of the shell, and an air channel structure is arranged on the shell. The air passage structure is communicated with the heating cavity and is configured to be detachably connected and communicated with one of the suction nozzle and the filter tip; when the air passage structure is connected with the suction nozzle, aerosol generated by the heating cavity is output through the suction nozzle; when the air channel structure is connected with the filter tip, aerosol generated by the heating cavity is filtered by the filter tip and output. According to the aerosol generating device, the air channel structure, communicated with the heating cavity, on the shell is configured to be detachably connected and communicated with one of the suction nozzle and the filter tip, and then the suction nozzle or the filter tip can be selected to be connected with the air channel structure according to user requirements. The aerosol generating device has the advantages of being convenient to use, wide in application range and high in user experience.

The invention provides a respiratory tract normalization model construction method and system based on a medical image, and relates to the technical field of medical image modeling, and the method comprises the steps: obtaining an airway segmentation result of a target group chest CT image, and obtaining a volume median model as a reference model; performing affine registration on other models by taking the reference model as a target to form a preliminary registration model group; a sample subset is selected from the sample subsets for nonlinear deformation registration, and a precise registration model set is obtained; then, superposing the fine registration model group and the reference model to generate an airway occurrence probability graph, and calculating a spatial adaptive threshold graph according to the spatial consistency of airway skeletons of the fine registration model group and the reference model; and finally, voxels with probability values higher than corresponding threshold values are extracted to generate a normalized respiratory tract model, statistical shape modeling is performed in combination with the fine registration model group, and a main variation mode of the airway form of the target group is extracted, so that standardization of the airway structure of the target group can be realized, a basic template is provided for group comparison, disease recognition and the like, and main variation of the form is quantified.

The invention relates to the technical field of aerosol generating devices, and discloses an air passage structure and an aerosol generating device. According to the air passage structure provided by the invention, the flow guide surface is arranged between the inlet of the main air passage and the confluence cavity, and the flow guide surface is gradually shrunk, so that air flow can smoothly enter the main air passage through the flow guide surface after being converged in the confluence cavity and changing the flow direction, and the converged air flow is prevented from directly impacting a sharp edge or a right-angle turning area in an original structure; and the phenomena of airflow separation, violent vortex and flow velocity sudden change caused by sudden airflow blocking and sudden direction change are improved, so that the aerodynamic noise is reduced. Meanwhile, due to the gradual shrinking design of the flow guide face, airflow can stably enter the main air channel in an accelerated mode, flow resistance and energy loss are reduced, suction resistance is reduced, and the suction smoothness degree of a user is improved.

This utility model provides an airway structure for a foolproof e-cigarette cartridge, including a cartridge body, an atomizing core assembly, and a lower sealing e-liquid assembly. The atomizing core assembly is disposed within the cartridge body, and the lower sealing e-liquid assembly is disposed at the lower end of the cartridge body. The lower sealing e-liquid assembly includes a lower sealing silicone, a cartridge base, a central electrode block, and an electrode component. The lower end face of the cartridge base has an air inlet and a central mounting groove. The central electrode block is disposed in the central mounting groove, and the air inlet is disposed on the side of the central mounting groove. An airway groove and a connecting cylinder are disposed within the cartridge base. The lower sealing silicone is sleeved on the cartridge base, and the inner wall of the lower sealing silicone and the airway groove form an air intake channel. One end of the air intake channel communicates with the air inlet. The lower end of the atomizing core assembly is installed in the connecting cylinder, and the connecting cylinder has an air intake notch communicating with the other end of the air intake channel. The beneficial effect is that the combination of the air inlet, airway groove, and air intake notch improves the user's vaping experience.

This utility model relates to the field of air conditioning ducts and discloses a ventilation duct structure for air conditioning in ship cabins. The duct includes a flattened oval shape. One end of the duct is fixedly connected to a flange, and the other end is fixedly connected to a flange. Two sets of ducts are provided, and an airflow stabilizing component is installed at the right-angle connection between the two sets of ducts. The airflow stabilizing component includes a fixing groove formed on the inner wall of the duct. In this utility model, by setting the airflow stabilizing component and installing an adjusting block at the right-angle connection of the duct, the crescent-shaped adjusting block is embedded in the bend of the duct to change the local cross-sectional shape, making it similar to the cross-section of the flattened oval duct, thus guiding the airflow to a smooth direction. Simultaneously, a T-shaped connecting block stably fixes the adjusting block to the two sets of ducts, and a magnetic strip is used to stably adhere it to the inner wall of the duct, ensuring that the adjusting block does not shift under the impact of high-speed airflow, thereby improving the stability of the gas flow inside the duct.

The utility model relates to the field of electronic cigarette discloses an air switch air channel structure of preventing condensate, including zinc alloy shell, PCB assembly, air adjusting device, POD oil storehouse base and data line storage mechanism, data line storage mechanism includes fixed box, the fixed box in top end fixed setting has micro motor, the micro motor output fixedly covers and sets up one no. In the utility model, the data line does not need to be carried additionally, the problem that traditional data line is lost or forgotten can be effectively avoided, after charging, the micro motor can be started to wind the data line neatly back to the outer end of the first binding roller.

The utility model relates to the technical field of heat exchange equipment, in particular to an exchanger air channel structure and a shell and tube type evaporator heat exchange assembly with the same, which comprise a shell and tube type evaporator main body and a fin type heat exchanger main body, and an air inlet pipe and an air outlet pipe of the fin type heat exchanger main body are both fixedly connected with the shell and tube type evaporator main body. A heat exchange cavity is formed in the shell and tube evaporator body, and a shell and tube evaporator core is fixedly installed in the heat exchange cavity. According to the aluminum plate-fin heat exchanger, high-temperature fluid is primarily cooled through the high heat transfer coefficient of the aluminum plate-fin heat exchanger, the pre-cooled fluid enters a shell and tube evaporator, efficient heat exchange is still kept under the low temperature difference, residual heat is deeply recycled, the heat recovery efficiency is greatly improved, and compared with the prior art, the heat recovery efficiency is remarkably improved.

The invention relates to the technical field of cardio-pulmonary resuscitation (CPR) and automatic external defibrillator (AED) training and assessment, in particular to a multi-sensing CPR-AED integrated assessment method capable of real-time feedback and data reporting, which comprises a model main body, a sensor array module, an action standard sensing module, a data processing module, a human-computer interaction module, a power supply module and a working mode, the model main body simulates an upper body structure of a human body and comprises a chest area used for cardio-pulmonary resuscitation (CPR) operation, an electrode plate pasting area used for electric defibrillation (AED) operation and a simulated airway structure, and the chest area is made of a high-elasticity material; data are collected through the model main body and the sensor array module, specifications are detected through the action specification sensing module, and an exercise and assessment mode is set; the other part introduces an intelligent model containing multiple types of sensors and a data processing and interaction unit aiming at traditional assessment pain points, dual modes are set, data can be acquired and analyzed to generate a report, and the assessment objectivity is technically improved through the two modes.

The application discloses a woven forming airway pneumatic pressing device and a preparation method thereof, and aims to solve the problems of low durability and low sealing property of the device in the prior art. The device comprises a main body, a gas path interface assembly is arranged on one side of the main body, the main body comprises at least one airway structure and at least one air-permeable structure, the airway structure is connected with the air-permeable structure, the airway structure comprises a first composite layer and a second composite layer, the first composite layer and the second composite layer are oppositely arranged, and the inner surfaces of the first composite layer and the second composite layer form a closed airway inner cavity. The airway structure for inflation and deflation is directly formed in the main body, and the sealing connection of the airway and the gas path interface assembly is considered in the process of forming the air-tight structure, so that the durability and the sealing property of the device are improved.

The utility model relates to the technical field of electronic cigarettes, in particular to an independent airway structure of an electronic cigarette. The independent air channel structure comprises an oil cup, oil storage cotton and lower silica gel. Lower silica gel is sealed at the lower end of the oil cup; the device further comprises an airway support and a lower shell. An air outlet matched with the lower silica gel is formed in the top end of the air passage bracket, and the bottom end of the air passage bracket is open; the lower shell is in sealing fit with the bottom end of the air channel support and provided with an air inlet. According to the utility model, the problems caused by the adoption of a silica gel airway are solved; the method can be applied to the airway structure of the electronic cigarette.

This invention discloses an electromagnetic registration method, device, and medium for a bronchial navigation system, relating to the fields of medical navigation and electromagnetic positioning technology. The method first acquires CT image data of the target bronchus, constructs a three-dimensional image space, and completes airway image segmentation. Then, based on the airway image segmentation results, it extracts key points of the bronchus and the airway centerline in the image space, while simultaneously acquiring the corresponding key points and centerline point sets in the actual space using an electromagnetic positioning system. Subsequently, it uses the dual-space key points to complete coarse registration of the discrete point set, obtaining an initial rigid body transformation matrix. Finally, it uses this matrix to initialize the pose of the image centerline, and employs a point cloud iterative algorithm to complete fine registration of the centerline, outputting the final spatial transformation matrix. This invention employs a deep learning key point extraction and a two-stage coarse and fine registration strategy, significantly improving the robustness and accuracy of bronchial navigation registration, and adapting to precise navigation of equipment with complex airway structures.

This invention relates to the field of image data visualization technology, and more particularly to an imaging system and method for visualizing pulmonary edema. The visualization catheter includes a broadband image sensor disposed at a probe at the catheter's tip, and a multi-band LED light source surrounding the broadband image sensor. An image analysis module is used to determine the airway structural complexity by acquiring the airway cross-sectional area and airway contraction frequency based on airway images. A light source driving module is used to determine the operating mode of the multi-band LED light source based on the airway structural complexity and lung imaging sensitivity. A light source adjustment module is used to determine the operating adjustment strategy of the multi-band LED light source in response to a strong bias in imaging deviation, combined with the operating mode of the multi-band LED light source. An image adjustment module is used to adjust the spectral feature threshold or the fusion weight of each spectral image according to the result of the adjustment strategy. This invention improves the accuracy of the imaging system for visualizing pulmonary edema.

This utility model relates to the field of electronic cigarette technology and discloses an integrated dual-core, dual-airflow structure for electronic cigarettes. It includes a shell, a display screen shell attached to the left end of the shell, a button assembly located at the left end of the display screen shell, a mouthpiece at the top of the shell, a sealing assembly inserted into the bottom of the shell, and an airflow regulating assembly attached to the bottom of the shell. An oil tank assembly is located inside the shell, and an atomizing assembly is located inside the oil tank assembly. A battery bracket is fixedly connected to the bottom of the inner wall of the shell. This utility model uses atomizing core heating to evaporate the e-liquid inside the oil reservoir. The aerosol generated during heating rises through airflow channels inside a steel tube and enters the mouthpiece through two sets of airflow channels. The user inhales the aerosol through the mouthpiece. The two horizontally arranged atomizing cores and dual airflow channels enhance atomization to achieve optimal effect and taste, providing a better user experience.

The utility model relates to an airway structure which comprises an airway body, an air hole is formed in the airway body, the airway body is connected with an adjusting plate capable of relatively moving, an adjusting hole is formed in the adjusting plate, and the adjusting hole and the air hole at least partially coincide. The utility model further relates to the protective door. The adjusting plate is opposite to the gas pipe main body, so that the overlapping area of the adjusting holes in the adjusting plate and the gas holes in the side face of the gas pipe main body is changed, the area of gas passing through the holes is reduced, the initial speed of the gas ejected out of the holes is higher, and therefore it is guaranteed that the ejected gas can cover a wider range.

This application relates to a gas path structure and a ventilator. The gas path structure is used for gas delivery in the ventilator and includes a gas source, a pressure reducing valve, and a detection branch. The pressure reducing valve includes an input end and an output end. The input end is connected to the gas source, and the output end is used to connect to the user. The detection branch is connected to the output end of the pressure reducing valve and is used to detect the pressure at the output end. Because the detection branch is connected to the output end of the pressure reducing valve, it can detect the pressure at the output end in real time, providing a reference for adjusting the pressure of the pressure reducing valve. Compared to traditional technologies that require disassembling the pressure reducing valve for separate pressure adjustment, the gas path structure provided in this application, by setting a detection branch that can detect the pressure at the output end of the pressure reducing valve, allows for pressure adjustment of the pressure reducing valve without disassembling it. This improves the convenience of pressure adjustment during factory testing, fault diagnosis, troubleshooting, and maintenance. A ventilator including the above-mentioned gas path structure makes pressure adjustment of the pressure reducing valve more convenient.

The utility model provides an air channel structure and an atomization device, and relates to the technical field of electronic atomization, the air channel structure comprises an air inlet, an air outlet and a first airflow channel, and the first airflow channel is configured to allow airflow to flow from the air inlet to a first air outlet end; the second airflow channel is configured to allow airflow to flow from the second air inlet end to the air outlet; the air inlet end of the air inlet distribution mechanism is communicated with the first air outlet end, and the air outlet end is communicated with the air outlet and the second air inlet end; the air inlet distribution mechanism is configured to distribute air flow exhausted by the first air flow channel to the air outlet or at least partially distribute the air flow exhausted by the first air flow channel to the second air flow channel. The atomization device comprises an airway structure and a first aerosol generation assembly used for generating first aerosol. The first airflow channel penetrates through the first aerosol generating assembly; the second aerosol generating component is used for generating second aerosol; the second airflow channel passes through the second aerosol-generating component. According to the invention, switching adjustment of various aerosol tastes is realized.

The utility model discloses a smoke exhaust device with a laminated air duct structure, which comprises a machine body and a fan, the machine body is provided with a smoke inlet cavity and a smoke exhaust cavity which are vertically laminated, the smoke inlet cavity is close to the upper part, the smoke exhaust cavity is close to the lower part, the smoke inlet cavity is communicated with the smoke exhaust cavity through a communicating hole, the fan is arranged in the smoke exhaust cavity, and an air inlet end directly faces the communicating hole; a smoke inlet hole communicated with the smoke inlet cavity is formed in the top of the machine body, and a smoke exhaust hole communicated with the smoke exhaust cavity is formed in the side wall of the machine body. The smoke inlet cavity and the smoke exhaust cavity which are stacked up and down are arranged in the machine body, the smoke inlet cavity is communicated with the smoke exhaust cavity through the communicating hole, the fan is arranged in the smoke exhaust cavity, the air inlet end of the fan directly faces the communicating hole, the fan is horizontally placed, and the air inlet end of the fan is parallel to the smoke inlet hole, so that when the fan is started, air flows smoothly and rapidly, the smoke exhaust efficiency is good, and the whole machine body is compact and small.

The invention discloses a transformer partial discharge dynamic simulation electrode and simulation test device, and the electrode comprises an electrode body, the end part of the electrode body extends to form a conical thorn part, and the cross section size of the conical thorn part is gradually reduced from the connection part of the conical thorn part and the electrode body to the end part until a tip is formed; the electrode body located at the cone thorn part is sleeved with an arc top piece in a sealing mode, a sealed cavity is formed between the arc top piece and the outer wall face of the cone thorn part, and the inner wall face of the arc top piece makes contact with the tip end. An air channel structure is formed in the electrode body, the outer end of the air channel structure communicates with an external air extractor, and the inner end of the air channel structure communicates with the cavity; in an actual test, the air extractor works to extract air into the cavity through the air passage structure, so that the arc top piece deforms towards the conical thorn part under the action of internal and external pressure difference until the arc top piece is attached to the conical thorn part, the continuous evolution process from the initial state of partial discharge to the final height sharpening into the sharp thorn is dynamically simulated, complete research on discharge is greatly facilitated, and the electrode is simple in structure and convenient to operate. Installation and use are convenient, and different test requirements are met.

The utility model discloses an atomizer and an aerosol generating device. The atomizer comprises an atomizing base and an air channel structure. The atomization base is provided with a containing cavity, and the containing cavity is used for containing an aerosol generating substrate. The air channel structure comprises an air inlet piece and an air guide piece, the air inlet piece is connected with the atomization base and provided with a plurality of air inlet channels, the air inlet channels are correspondingly communicated with different positions of the containing cavity in the radial direction from the bottoms respectively, the air guide piece is provided with an air guide channel communicated with outside air and comprises a main body and an air guide part, the air guide part is movably arranged in the main body, and the air guide part is arranged in the main body. In the process that the air guide part moves relative to the main body, the air guide channel is sequentially communicated with the multiple air inlet channels to jointly form an air flow channel, and the air flow channel is used for allowing external air to flow to different positions of the containing cavity. In the application, the airflow passage can be accurately matched with the aerosol generating substrate, so that the aerosol generated by heating the aerosol generating substrate can be ensured to be effectively taken out, the amount of smokable aerosol is increased, and the smoking taste is improved.

The invention discloses an anatomical structure guided asymmetric expansion convolution fusion airway segmentation method, and relates to the field of medical image processing, the method is characterized in that an asymmetric expansion convolution module ADCF is embedded in an encoder layer, a bottleneck layer and a jump joint of an image segmentation network, parallel expansion rate multi-branch convolution is adopted, and the image segmentation network is constructed; multi-scale convolution feature fusion is realized, three-dimensional anisotropic features are modeled through asymmetric convolution of direction decoupling, multi-scale feature alignment is enhanced, and deep gradient disappearance is inhibited in combination with residual connection; the feature extraction capability in a far-end airway region is enhanced through weighting Focus Tversky Loss, gradient enhancement of a low-confidence region is regulated and controlled through focus parameters, and punishment of false detection and missing detection of the airway is balanced. According to the method, cross-scale feature fusion and three-dimensional anisotropic modeling are achieved through the ADCF module, gradient distribution is dynamically optimized in combination with weighted Focus Tversky Loss, the segmentation performance of the model on a far-end small airway is remarkably improved, and the method has the advantages of topology and accuracy in complex airway structure modeling.

The utility model provides an air passage structure and a transformer. The air channel structure comprises a primary side air channel and a secondary side air channel, the secondary side air passage is arranged on the periphery of the primary side air passage and comprises a third opening and a fourth opening; the wind resistance adjusting piece is arranged at the first opening of the primary side air channel; and the one or more adjustable supports are connected with the wind resistance adjusting piece, and the adjustable supports are configured to be suitable for adjusting the distance between the wind resistance adjusting piece and the first opening. The distance between the wind resistance adjusting piece and the first opening can be adjusted through the adjustable support, the pressure loss of the primary side air channel is changed, then the air volume passing through the primary side air channel and the secondary side air channel is adjusted, and the heat dissipation efficiency is improved.

The present invention relates ablation zone calculation for lung treatment. In order to provide improved knowledge about the distribution of the bronchi structure, a device (10) for ablation zone calculation for lung treatment is provided that comprises a data input (12), a data processor (14) and an output interface (16). The data input is configured to provide to the data processor a 3D reconstruction (18) of a lung structure of a subject, the 3D reconstruction being based on image data of the subject; and to provide tissue properties (20) for a region of interest of the 3D model of the airway tree; wherein the region of interest comprises the target zone for ablation. The processor is configured to extend the 3D reconstruction with a generation of a fractal model of at least a part of an airway structure of the subject; to generate the fractal model in dependency from the 3D reconstruction, wherein the 3D reconstruction and the fractal model form a 3D model of the airway tree of the subject; to identify a target zone for ablation within the 3D model of the airway tree; to compute a thermal modelling for at least the target zone for ablation based on the 3D model of the airway tree and the tissue properties; and to predict an ablation zone (22) within the 3D model of the airway tree based on the thermal modelling. The output interface is configured to provide the predicted ablation zone to a user.

The utility model relates to electronic cigarette technical field discloses an electronic cigarette air switch air channel structure, including electronic cigarette main part, one side in the electronic cigarette main part is provided with adjusting mechanism, the adjusting mechanism includes knob, one side fixedly set up gear of knob, one side slide of the electronic cigarette main part inside is provided with rack, the front end fixed setting of rack has adjusting block, one side of adjusting block is provided with fixed hole, the inside of electronic cigarette main part is provided with protection mechanism, the protection mechanism includes first trachea, one side of first trachea is provided with pneumatic switch. In the utility model, the air intake size is adjusted through adjusting mechanism, thereby can satisfy the individualized demand of different users to suction resistance, the pressure balance of whole air channel system can be ensured by protection mechanism, not only improves the stability of airflow, still ensured the pressure balance of air channel system, avoids the air leakage or damage due to the air pressure excessively high.

The application discloses an air passage structure and an electronic atomizer. The air passage structure comprises a plate body, a first air inlet hole, an air outlet hole and a sound attenuation passage. The plate body comprises a first plate surface and a second plate surface which are opposite to each other. The first air inlet hole and the air outlet hole are respectively formed in the plate body and penetrate through the first plate surface and the second plate surface. The first air inlet hole is used for directly communicating with the outside atmosphere. The sound attenuation passage is formed in the first plate surface and / or the second plate surface and is connected with the first air inlet hole and the air outlet hole at two ends respectively. A plurality of grooves and protrusions are arranged in the sound attenuation passage. The geometric flow cross-sectional area of the sound attenuation passage is greater than that of the first air inlet hole and the air outlet hole. The air passage structure can reduce the noise generated by the gas flow.

The utility model relates to a vibration disc which comprises an installation base, an air channel structure is installed at the upper end of the installation base, the middle face of the upper end of the vibration disc is arranged in a conical shape, the upper end of the vibration disc is provided with an upward spiral annular wall, at least three sets of notches are formed in the annular wall, the bottoms of the notches are planes, and an opening is further formed in the surface of the annular wall. A first limiting plate is installed on the inner side wall face of the annular wall, a groove is formed outwards in the surface of the spiral wall face of the annular wall, a guide plate is installed on the groove forming face, an arc-shaped groove face is arranged on the bottom face of the groove forming face, and a semi-arc-shaped groove is further formed in the surface of the spiral wall face of the annular wall. The left side of the semi-arc groove and the surface of the wall face are provided with an inclined face with an inclined radian, the recognition structure faces the spiral wall face of the annular wall, and the air channel structure is connected with the overturning structure through a pipe. The vibration disc solves the problems that when materials are conveyed through an existing vibration disc, a plurality of materials are stacked, detection of an industrial camera is affected, and uniformity of material faces cannot be guaranteed.

The utility model relates to a bottle cap for improving the flavor of drinking water. The bottle cap comprises a bottle cap shell and a bottle cap body, the whole bottle cap shell is in a circular tube shape with the upper end sealed and the hollow interior, internal threads are arranged on the inner wall of the bottle cap shell, and a mounting opening is formed in the middle of the upper end face of the bottle cap shell. The whole cross section of the bottle cap body is in a convex shape, and a through water outlet hole is formed in the bottle cap body; an essence storage cavity is formed in the bottle cap body, and essence is placed in the essence storage cavity. An air inlet is formed in the middle of the bottle cap body and communicated with the essence storage cavity, and an air outlet is formed in the upper end of the bottle cap body and communicated with the essence storage cavity. The protruding part of the upper end of the bottle cap body penetrates through the mounting opening, and the lower end of the bottle cap body is connected into the bottle cap shell. The bottle cap has the advantages that when a user opens the bottle cap for use, fragrance is mixed with drinking water through the air channel structure and enters the oral cavity, and drinking experience is improved; the essence material can be replaced as required, so that individual requirements of different users are met.

The utility model relates to the technical field of electronic cigarettes, in particular to an independent airway electronic cigarette with stable taste. The electronic cigarette provided by the utility model comprises an airway bracket and a toggle switch, the airway bracket is arranged at the lower end of the electronic cigarette; the toggle switch is arranged at the bottom of the electronic cigarette; the device further comprises gas sealing silica gel and a gas control support. The bottom end of the air passage bracket is connected with an air control bracket through air sealing silica gel; an air inlet hole is formed in the air control bracket; the air inlet of the air control support is opened or closed through the toggle switch. According to the utility model, stable airflow can be provided, and the smoke taste is stabilized; the method can be applied to an electronic cigarette flue structure.

The application belongs to the technical field of medical equipment, and particularly discloses a gas path structure of a breathing machine, which comprises an oxygen supply branch, an air supply branch, an air-oxygen mixing pipe, and an air-oxygen output branch, wherein the oxygen supply branch is provided with a first airflow smoothing assembly and a first flowmeter, the air supply branch is provided with a second airflow smoothing assembly and a second flowmeter, and the air-oxygen output branch is provided with a third flowmeter, a third airflow smoothing assembly, and a fourth airflow smoothing assembly; oxygen and air are mixed in the air-oxygen mixing pipe. The oxygen supply branch, the air supply branch, and the air-oxygen output branch are provided with corresponding airflow smoothing assemblies to reduce the stress of airflow in the gas path, thereby reducing the turbulence of the gas path of the breathing machine, smoothing the airflow, stabilizing the flow, improving the inhalation comfort of patients, and setting the flowmeters to accurately measure and monitor the flow of each gas path, so that the breathing machine works stably.