114 results about "Airway structure" patented technology

The utility model discloses a foil winding air passage structure of a dry-type transformer, which comprises an outer ring and an inner ring, and a support piece is arranged between the inner ring and the outer ring. The number of the supporting pieces is multiple, and an air channel is formed between any two adjacent supporting pieces. The supporting piece comprises a first plate body and a second plate body, and a first elastic part and a second elastic part are arranged between the opposite faces of the first plate body and the second plate body. On the basis, after the supporting piece is mounted in the air channel, the first plate body is in contact with the inner wall of the outer ring, the second plate body is in contact with the outer wall of the inner ring, and the two elastic parts are used for opening the two plate bodies, so that the inner ring and the outer ring are supported, and meanwhile, the two elastic parts can guarantee normal flowing of air flow.

The invention relates to the technical field of electric tools, and provides a suction cup sealing structure which is characterized in that the circumferential edge of the outer ring of an annular sealing part protrudes towards one side to form a first flange part, and a second flange part is formed on the side, in the same direction as the first flange part, of the circumferential edge of the inner ring; a plurality of through holes are formed in the annular face between the first flange part and the second flange part, and a supporting part is embedded in the first flange part. An annular protruding lip edge is arranged on the side face, facing the first flange part, of the through hole, and when the sealing disc is attached to the annular face, the air guide holes in the sealing disc are communicated with the overlapped part of the through hole. And a certain distance and a certain gap are kept between the sealing disc and the annular surface by the convex lips in the other through holes, so that an air passage is formed. The invention further provides the intelligent suction cup, the sealing disc is directly communicated with the through hole through the air guide hole, the sealing adsorption performance is improved through circumferential equal-interval layout, a smooth air channel is formed by ingeniously utilizing an existing structure, the structure is compact, and later disassembly and maintenance work is more convenient.

The invention relates to the technical field of soft body robots, in particular to a logarithmic spiral bidirectional bending pneumatic soft body actuator and a soft body robot, the bidirectional bending pneumatic soft body actuator comprises an elastic body and a deformation limiting layer, the elastic body comprises an air hole structure, a fixing structure and a deformation structure which are connected in sequence; the interiors of the air hole structure, the fixing structure and the deformation structure are communicated to form an air channel structure; the air hole structure is communicated with an external air source, and the deformation structure is in a logarithmic spiral shape initially; and the deformation limiting layer is adhered to one side of the maximum outer cambered surface of the deformation structure and is used for limiting the deformation of one side, adhered by the deformation limiting layer, of the elastic body. A deformation structure in the bidirectional bending pneumatic soft body actuator adopts biological bionic design and is in a logarithmic spiral shape, and the bidirectional bending pneumatic soft body actuator has bidirectional bending capacity, high flexibility and better adaptability to a target object.

The utility model discloses a heating atomization aromatherapy machine which comprises a shell and a transparent upper cover, a smoke buffer cavity is arranged in the transparent upper cover, the transparent upper cover covers the upper end of the shell, a control panel, an atomization smoke cartridge and a blowing fan are arranged in the shell, aromatherapy materials are contained in the atomization smoke cartridge, and the atomization smoke cartridge can heat and atomize the aromatherapy materials. The upper end of the shell is provided with a smoke outflow hole, the smoke outflow hole is communicated with the smoke temporary storage cavity and the atomization air channel, the other end of the atomization air channel is communicated with an air outlet of the blowing fan, the shell is provided with an air inlet hole, the air inlet hole is communicated with an air inlet of the blowing fan, and the transparent upper cover is provided with a mist outlet hole. And the fog outlet hole is communicated with the smoke buffer cavity. According to the aromatherapy machine, only one blowing fan and one air channel are needed, the structure is more reasonable, the mechanical structure of the aromatherapy machine is simplified, the overall assembly difficulty of the aromatherapy machine is reduced, the efficiency is improved, and the manufacturing cost of the aromatherapy machine is also reduced.

The invention discloses a spiral portable breathing machine which comprises a machine body, an air supply mechanism used for forming a turbine drive type air supply structure, a ventilation mechanism used for forming a spiral air channel structure and a mask mechanism used for forming a buffer type mask structure. The air supply mechanism is arranged in the machine body, the ventilation mechanism is arranged on one side of the air supply mechanism, and the mask mechanism is assembled on the upper portion of the machine body corresponding to the ventilation mechanism. A spiral air channel structure is adopted, the venturi principle is utilized, air can be accelerated to improve the air filtering efficiency and the air supply effect of the breathing machine, the mask mechanism is arranged and provided with a buffering assembly, high-speed air exhausted by the ventilation mechanism can be buffered to achieve the slow air supply effect, and the breathing comfort of a user is improved.

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.

The invention relates to an air passage structure of an atomizing device, which comprises a shell and an atomizing core, and is characterized in that the shell is provided with at least one substance storage passage and at least one air passage; and the at least one substance storage channel and the at least one gas channel are mutually independent. According to the atomization device, the substance storage channel and the air channel are independent of each other, so that the atomized substance flowing out of the atomization device is separated from the substance storage channel, a user can suck the atomized substance after atomization, the atomized substance to be atomized cannot be sucked in, and the atomization device is safe and sanitary. In addition, when atomized substances are injected into the substance storage channel, the channel opening of the substance storage channel may be polluted. In addition, due to the fact that the substance storage channel and the air channel are independent of each other, a user can avoid a channel opening of the polluted substance storage channel and cannot make contact with the channel opening of the polluted substance storage channel, and safety and sanitation of the atomization device are further guaranteed.

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 the technical field of aerosol atomization, provides an atomization device and an atomizer shell, and aims to solve the technical problem of unreasonable structural design of an air passage of electronic atomization equipment. The atomization device comprises a shell, an air channel piece and an atomization assembly, the shell is provided with an air inlet hole, the air channel piece is arranged in the shell in the axial direction of the air inlet hole, and the atomization assembly is arranged in the shell. The air channel piece is provided with an air channel, the air channel extends in the axial direction of the air inlet hole, an inlet of the air channel is opposite to the air inlet hole, and an outlet of the air channel is opposite to an inlet of the atomization assembly, so that external airflow directly flows into the atomization assembly along the air channel to be atomized. When external airflow flows into the shell from the air inlet hole, the external airflow can directly flow into the atomization assembly in the air channel in the axial direction of the air inlet hole to be atomized, the distance of the external airflow flowing into the atomization assembly is greatly shortened, and therefore it is ensured that the external airflow can be supplied to aerosol matrixes in time to be atomized.

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 relates to a device and a method for preparing polycrystalline silicon carbide, polycrystalline silicon carbide and application thereof. The apparatus comprises: a crucible; the graphite substrate is arranged on the crucible and is positioned at the upper part of the crucible; the air channel structure is arranged in the crucible and is used for introducing air into the crucible; the baffle is arranged in the crucible, a gap is formed between the baffle and the graphite substrate, a projection covers the graphite substrate, and a gap is formed between the baffle and the bottom wall of the crucible; and the heater is arranged in the crucible and is lower than the baffle. The device can be used for manufacturing polycrystalline silicon carbide with low resistivity.

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.

The utility model discloses a hand -held oxygen generator's integrated type air intake subassembly of oxygen generating equipment field, including air flue board, first solenoid valve and second solenoid valve, be equipped with air intake passage, connecting channel and exhaust passage on air flue board, the number of connecting channel is two, is connected with air intake passage and exhaust passage through first solenoid valve and second solenoid valve respectively, when the power of first solenoid valve and second solenoid valve is off, corresponding connecting channel is communicated with air intake passage, when the power is on, corresponding connecting channel is communicated with exhaust passage. The utility model discloses through the structural design to air intake passage, connecting channel and exhaust passage, make two molecular sieve tank share air intake passage and exhaust passage to reduce the air flue number, make the structure more compact and simple, and under the cooperation of solenoid valve and air flue structure, when the equipment is in the closed state, the air intake end of two molecular sieve tanks is cut off with outside through air flue board and solenoid valve, can avoid the problem that molecular sieve inhales the moisture failure.

The utility model discloses a humidifier for a breathing machine and the breathing machine. The humidifier comprises a shell, a cavity formed in the shell and an air channel structure arranged in the shell and communicated with the cavity. The air channel structure comprises an air inlet pipe allowing air to flow into the cavity and an air outlet pipe allowing the air to flow out of the cavity. The air inlet pipe comprises a first air inlet communicated with the outside, a first air outlet communicated with the cavity and a flow guide pipe communicated with the first air inlet and the first air outlet, the flow guide pipe comprises a first guide wall and a second guide wall which define the first air outlet, and the first guide wall protrudes out of the second guide wall in the direction away from the first air outlet; and the guiding effect is achieved on airflow diffusion of the first air outlet, and airflow of the first air outlet is prevented from diffusing towards the shell.

The utility model provides an electronic cigarette structure with an adjustable airflow channel, and relates to the technical field of electronic cigarette structures. Comprising a shell, a battery is fixedly mounted on the inner wall of the shell, a mounting clamping plate is fixedly connected to the inner wall of the shell, a mounting clamping block is clamped to the inner wall of the mounting clamping plate, an atomization frame is fixedly mounted at the top of the outer surface of the mounting clamping block, and a tobacco tar frame is fixedly mounted at the top of the outer surface of the atomization frame; the inner wall and the top of the tobacco tar frame are provided with adjustable air passage structures, the flow speed of the air passages in the air outlet frame can be controlled by controlling the number of the vent holes through the adjustable air passage structures, then the number of the vent holes can be opened and blocked according to actual use requirements, the flow speed of smoke can be controlled, and the smoke quality is improved. Therefore, a beginner can adapt to the flow of the smoke, the proper gas outlet speed can be selected by controlling the flow speed of the smoke, and waste caused by a large amount of gas outlet is avoided.

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 invention discloses an oil tank breather valve which comprises a mounting shell, an air guide pipe, a manual pressing assembly and a valve shaft. One end of the mounting shell is provided with an air inlet hole and mounting threads and is used for being fixedly connected with an oil tank; the manual pressing assembly comprises a manual valve shell, a hand pushing shaft and a torsional spring, and a structure capable of achieving manual air inlet and exhaust control is arranged in the manual pressing assembly. The valve shaft is of an integrated three-section structure and sequentially comprises a damping part, a guiding part and an air channel sealing part which are used for guiding positioning, air channel control and sealing damping. The valve sealing seat is matched with the sealing body, pre-pressing is provided through the spring, the valve shaft is driven to be opened or closed when external air pressure changes, and automatic air inlet or exhaust is achieved. The air channel structure integrates an annular air channel, a horizontal air channel and an air hole and is matched with a groove in the valve shaft to form a high-integration-level conduction path. By arranging multiple sealing rings and a damping pressure equalizing structure, the sealing performance and the operation stability are effectively improved.

The present invention provides a carrier device and semiconductor processing equipment. The carrier device includes a base body, wherein the plane on which the base body carries the wafer is a reference plane. The base body has an annular protrusion, the top surface of which is flush with the reference plane and is used to support and seal the edge area of ​​the wafer. The base body also has a first surface and a second surface below the reference plane, the first surface being close to the inner peripheral edge of the annular protrusion and the second surface being located in the center area of ​​the base body. The base body also has a third surface located between the first and second surfaces and recessed away from the reference plane. The first, second, and third surfaces are all distributed with interconnected airway structures. This solution can improve the uniformity of pressure distribution between the wafer and the base, thereby improving process uniformity.

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 a low-voltage winding axial air channel structure and a gas insulation transformer, and belongs to the technical field of transformers, the low-voltage winding axial air channel structure comprises an inner side insulation layer and a winding layer wound on the outer wall of the inner side insulation layer, the winding layer comprises a plurality of coil layers, and a plurality of first supporting strips are evenly arranged between every two adjacent coil layers at intervals; the first supporting strips separate air flow channels between the adjacent coil layers, a plurality of second supporting strips are evenly arranged on the outer wall of the inner side insulating layer at intervals, and the second supporting strips abut against the innermost layer of the winding layer. According to the low-voltage winding, the first supporting strips are uniformly arranged between the adjacent coil layers at intervals, so that the axial airflow channels can be formed, and the airflow channels ensure that gas can circulate without obstruction, so that heat generated in the operation of the winding can be taken away, a relatively good cooling effect is achieved, and the low-voltage winding is located in a relatively low-temperature environment.

The invention discloses electronic atomization equipment which comprises a noise reduction and silencing structure, and the noise reduction and silencing structure comprises an air channel structure, a noise reduction structure and a noise reduction structure, the trailing edge structure comprises a structure body and a plurality of flexible bodies, the structure body is connected to the air channel structure and located at the air outlet end of the air flow channel, the structure body is provided with a first flow channel communicating with the air flow channel, and one end of each flexible body is connected with the end, away from the air channel structure, of the structure body; the other end of the flexible body is a free end and is arranged towards one end far away from the air passage structure; the multiple flexible bodies are arranged around the circumferential direction of the airflow channel at intervals. Wherein the flexible body can destroy a large-scale structure of a vortex system, so that the size of the vortex system is miniaturized, disturbance of airflow at the position of a trailing edge structure is weakened, and therefore the effect of reducing noise is achieved; the vortex system can be smoother relative to the trailing edge structure through interaction of the flexible body of the trailing edge structure and the vortex system, the continuity of interaction of the trailing edge structure and the incoming turbulent flow can be improved, and the noise reduction effect can be improved.

The invention relates to the technical field of ship building, and discloses a high-pressure built-in air channel structure which comprises a middle built-in air channel and two sets of side built-in air channels, the two sets of side built-in air channels are symmetrically arranged on the two sides of the middle built-in air channel, and the middle built-in air channel comprises a middle air channel platform, a middle deck, a transverse supporting plate and a longitudinal bulkhead. An air passing hole is formed in the longitudinal bulkhead, the broadside built-in air channel comprises a broadside air channel platform, a broadside deck and a supporting assembly, an air inlet hole is formed in the broadside deck, a longitudinal air outlet is formed in the middle air channel platform, and a transverse air outlet is formed in the broadside air channel platform; according to the high-pressure built-in air channel structure and the assembling and welding method of the high-pressure built-in air channel structure, high-pressure air flow is guided and evenly distributed, the air can be evenly distributed in the hovering apron, the situation that the stability of the hovering apron is lowered due to uneven local pressure is avoided, and the structural strength of the high-pressure built-in air channel structure is effectively enhanced.

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 utility model provides an air channel structure for sputter coating and physical vapor deposition equipment with the air channel structure, and belongs to the technical field of physical vapor deposition equipment. The gas channel structure for the injection coating film is arranged in a deposition chamber of physical vapor deposition equipment for sputter coating, and comprises a gas inlet loop, a gas outlet loop and a gas outlet loop, each sinking pipeline comprises at least one connecting pipeline and an air outlet pipeline, the two ends of each connecting pipeline are communicated with the air inlet loop and the air outlet pipeline respectively, a plurality of air outlets which are uniformly distributed are formed in the bottom of each air outlet pipeline, each air outlet pipeline comprises an air outlet loop, and each air outlet loop is communicated with the corresponding connecting pipeline. The air outlet loops are concentrically arranged at intervals, and the height difference between each air outlet pipeline and the deposition base in the deposition chamber is not larger than a preset value. The air channel structure for sputter coating disclosed by the utility model is better in air inlet uniformity.

The invention relates to the technical field of atomization equipment, in particular to an atomizer and an electronic atomization device. The atomizer comprises a shell, wherein one end of the shell in the first direction is provided with a suction nozzle setting position; the heating body is arranged in the shell; the cache cavity is formed in the side, away from the suction nozzle arrangement position, of the heating body and used for caching aerosol generated by the heating body; the air inlet channel and the discharge channel are both communicated with the buffer cavity, and the buffer cavity is located between the air inlet channel and the discharge channel to jointly form an atomization air channel of the atomizer; the air inlet channel is provided with an air inlet communicated with the outside of the shell, and the air inlet is located between the buffer cavity and the suction nozzle arrangement position in the first direction, so that when the atomizer is in the posture that the suction nozzle arrangement position faces upwards, atomized liquid is limited to block the air inlet before the buffer cavity is filled with the atomized liquid; the discharge channel extends to the suction nozzle arrangement position so that the aerosol in the cache cavity can be discharged. The problem that the atomization air channel is prone to being blocked by leaked liquid is solved, and the reliability of the air channel structure is 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 utility model relates to the technical field of compressors, in particular to a noise reduction non-return structure for a special-shaped air passage of a rotary vane compressor, which comprises a shell and a front end cover arranged on one side of the shell, an air inlet and an air outlet are arranged on the outer surface of the shell, and the air inlet is arranged close to one end of the front end cover; an end cover cavity is formed in the side, facing the shell, of the front end cover, an air guide cavity, a working cavity and an exhaust cavity are formed in the shell, the air guide cavity is formed in the air inlet, the end cover cavity communicates with the air guide cavity and the working cavity, and the exhaust cavity is formed in the air outlet and communicates with the end, away from the end cover cavity, of the working cavity; and the air guide cavity is L-shaped, and a check valve is clamped in the air guide cavity. The air passage structure is optimized, airflow noise during operation of the compressor is effectively reduced, comfort of a driver and passengers is improved, the check valve is arranged in the air passage structure, the reverse rotation trend during shutdown of the compressor is controlled, abrasion and noise caused by reverse rotation are eliminated, and therefore the service life of the compressor is prolonged, and the working performance of the compressor is improved.

The invention discloses a real-time and accurate bronchoscope positioning method for the child pneumology department, and relates to the technical field of accurate positioning. During system operation, a clear respiratory tract structure image is obtained by adopting a high-resolution camera and ultrasonic imaging equipment; navigation performance data, real-time airway structure data and patient state data are collected through an instrument, a first data set, a second data set and a third data set are obtained, combined calculation is carried out, a real-time respiratory tract state index Sszt is obtained, the real-time respiratory tract state index Sszt is compared with a preset state threshold value Z and a preset state threshold value X, and the real-time respiratory tract state index Sszt is obtained. Respiratory tract states are divided into different grades, a real-time user interface is provided, and medical staff monitor the real-time states of the respiratory tracts of children through the user interface, make decisions, provide control and control functions for bronchoscope equipment and are used for immediately adjusting emergencies of patients.