34 results about "HEAT/MOISTURE EXCHANGE" patented technology

The invention discloses a tunnel dew formation and icing rapid monitoring method and system based on a space-time phase change cooperation mechanism, and relates to the technical field of tunnel engineering safety monitoring and freeze injury prevention and control. Establishing a tunnel geometric model and a heat-humidity-turbulence multi-field coupling physical model; synchronously acquiring heat and humidity physical property parameters and outdoor hourly meteorological parameters; taking the outdoor hourly meteorological parameters as Dirichlet boundary conditions and initial conditions of a heat-humidity-turbulence multi-field coupling physical model; determining a heat and humidity exchange coupling process of the tunnel wall surface and the internal environment, and defining heat and humidity transfer parameters under an unsteady state boundary; performing discretization processing on the tunnel geometric model by adopting a grid division strategy; by setting a dew point temperature threshold value and an icing temperature threshold value, a condensation risk area is judged, dynamic changes of the thickness of an ice layer are quantified, and monitoring of tunnel condensation and icing is achieved. The method can effectively reflect the distribution rule of multiple physical fields on the surface and in the tunnel in any time, accurately judge the risk area and quantify the thickness of the ice layer.

The present invention deals with a heat and moisture exchange filter with biocidal activity for medical ventilation equipment that comprises polymeric cellulose fibers impregnated with silver nanoparticles (AgNPs). The heat and moisture exchanger filter can be used in intubated patients under artificial ventilation in anesthesiology and intensive care and allows robust replacement, a fundamental utility for protection against nosocomial cross-contamination infections caused by microorganisms, such as bacteria, fungi, yeasts and viruses.The invention also deals with the method of preparing the heat and moisture exchange filter with biocidal activity and the use of silver nanoparticles.

The utility model relates to the technical field of refrigeration, in particular to an evaporative condenser. The evaporative condenser comprises a shell and a heat exchange tube. The heat exchange pipe is installed in the shell and used for allowing a heat exchange agent to flow, the spraying piece is installed in the shell and located above the heat exchange pipe, spraying holes are formed in the side, facing the heat exchange pipe, of the spraying piece, the foam metal layer is filled with foam metal filler, and the foam metal layer is installed in the shell; the shell is provided with an air inlet and an air outlet, and the heat exchange pipe, the spraying piece and the foam metal layer are all located between the air inlet and the air outlet. The heat exchanger has the advantages that the spraying piece can spray water used for cooling the heat exchange pipe towards the heat exchange pipe, the spraying piece is located above the heat exchange pipe, the spraying action can be naturally formed by means of gravity, structures such as a booster water pump do not need to be arranged, and due to the fact that holes are formed in the foam metal layer, the heat and humidity exchange efficiency of water and air can be improved; therefore, the performance of the evaporative condenser is improved.

The invention relates to the technical field of intelligent energy-saving planning, in particular to a near-zero-energy-consumption community precise planning platform, which is characterized in that a building environment heat and humidity monitoring module is used for acquiring environment parameters of community buildings, calculating air temperature and humidity gradients, setting humidity permeability coefficients, analyzing the influence of humidity on an aerodynamic environment and acquiring air humidity and wind speed correction data; according to the method, the air temperature and humidity gradient and the humidity permeability coefficient are dynamically monitored, quantitative analysis of humidity on the aerodynamic environment is achieved, and the accuracy of water vapor diffusion and building envelope heat exchange evaluation is improved. Through calculation of air flow density distribution and buoyancy driving force, a complete analysis framework from heat and humidity exchange to air flow backflow is constructed, the air flow backflow path of the building group is optimized, and the calculation precision of heat exchange between buildings is improved. In combination with damp and hot load calculation, load matching of cooling and heating equipment is more accurate, energy waste is reduced, and system stability is improved.

The utility model relates to the technical field of clothes processing, in particular to clothes processing equipment. Specifically, the clothes processing equipment comprises a roller, a drying device and a bypass assembly, the drying device comprises a circulating air duct communicated with the roller and a dehumidification component installed in the circulating air duct, the air inlet end of the bypass assembly is communicated with the circulating air duct, and the position where the circulating air duct is communicated with the bypass assembly is located on the upstream of the dehumidification component. The air outlet end of the bypass assembly communicates with the roller, and the bypass assembly can send part of air flow entering the circulating air channel back into the roller to conduct heat and humidity exchange with the clothes in the roller again. By arranging the bypass assembly to communicate the circulating air duct with the roller, part of airflow can be sent back into the roller again to conduct heat and humidity exchange with clothes in the roller again, the moisture content of the airflow is increased, the temperature of the airflow is lowered, then the airflow enters the circulating air duct to conduct heat exchange with the evaporator, the condensation effect is improved, and therefore the drying efficiency is improved; the drying time is shortened.

The invention discloses a textile workshop environment control method and device based on multi-modal sensing and a medium, and relates to the technical field of industrial intelligent control and energy conservation, and the method comprises the steps: synchronously collecting multi-modal sensing data in a textile workshop based on a preset control period; aiming at the current control period, determining a current production load parameter group of the textile workshop through a load calculation model, and determining a current health state of the air conditioning equipment through an equipment health degree evaluation model; inputting into a thermodynamic digital twinborn model, performing simulation operation on the heat and humidity exchange process of the textile workshop, and outputting predicted workshop temperature and humidity distribution; constructing an energy consumption target optimization function for solving to obtain an optimal control parameter set; and adjusting control instructions corresponding to the monitoring units are generated and issued to the air conditioning equipment. By simulating the heat and humidity exchange process of the workshop, the temperature and humidity field distribution of the next period can be predicted in advance, so that the control behavior is converted into active beforehand intervention from passive afterward remedy.

The invention provides a deep metal mine stepped heat transfer simulation device and an experimental method thereof. The deep metal mine stepped heat transfer simulation device comprises a ground temperature simulation system, a heat and humidity exchange system, an airflow monitoring system and an acquisition control system, the ground temperature simulation system is used for establishing a controllable temperature field in a surrounding rock similar material to simulate surrounding rock heat conduction; the heat and humidity exchange system is arranged in the ground temperature simulation system and comprises a porous roadway lining and a seepage device, the roadway lining and a surrounding rock similar material are integrally formed, and the heat and humidity exchange system is used for simulating heat and humidity exchange of the roadway wall surface; the airflow monitoring system communicates with the heat and humidity exchange system and is used for providing controllable airflow into the roadway and monitoring convective heat exchange parameters. And the acquisition control system is connected with the ground temperature simulation system, the heat and humidity exchange system and the airflow monitoring system and is used for adjusting operation parameters and acquiring data. The problems that in an existing experiment, gap thermal resistance is too large, and interface heat and humidity exchange is lacked are solved, and the surrounding rock-interface heat conduction and heat and humidity coupling process of a deep mine is truly reproduced.

The present invention discloses a dual-temperature condensing air-supplying and heat-increasing heat pump drying system and control method with ejector efficiency enhancement. The system includes a refrigerant circulation circuit and an air circulation circuit. The refrigerant circulation circuit includes: a variable-frequency air-supplying and heat-increasing compressor, a high-temperature condenser, an ejector, a low-temperature condenser, three electronic expansion valves, two flash tanks, an evaporator, and temperature and pressure sensors. In the air circulation circuit, the wet air at the outlet of the drying box is cooled and dehumidified by the evaporator and then passes through the low-temperature and high-temperature condensers in sequence. It is heated to high-temperature dry air and enters the drying box for heat and moisture exchange, thereby drying the material. At the same time, it becomes wet air and circulates again. The present invention utilizes the expansion work recovery effect of the ejector to reduce the dryness of the refrigerant before entering the electronic expansion valve, increase the unit mass cooling capacity of the evaporator, and thus enhance the dehumidification capacity of the evaporator; the dual-temperature condensation reduces the heat transfer temperature difference, improves energy utilization efficiency, and ultimately improves system performance.

This invention provides a bidirectional prestressed concrete creep testing device and method, relating to the technical fields of concrete testing technology and long-term structural deformation monitoring. The device includes: a concrete slab specimen; multiple prestressing units, disposed on the concrete slab specimen and bonded integrally with it, orthogonally distributed in the horizontal plane and multi-layered in the thickness direction, for applying bidirectional prestress to the concrete slab specimen; a testing unit for monitoring changes in prestress, temperature, and humidity of the concrete slab specimen; a boundary protection unit disposed on the sidewall of the concrete slab specimen to block lateral heat and moisture exchange, ensuring that temperature and humidity within the concrete slab specimen are transmitted only along the thickness direction; and a support frame on which the concrete slab specimen is mounted for suspended support, allowing ambient air to flow freely across the upper and lower surfaces of the concrete slab specimen.

The present invention relates to a method, device, and application for determining the heat and moisture exchange capacity of an upward-spraying heat exchange unit, and relates to the field of underground ventilation and air conditioning technology. The aforementioned method includes the following steps: constructing a flow model for the entire migration process of a spray droplet group within the heat exchange unit; calculating the drag coefficient based on the force of the droplet group; calculating the maximum vertical migration distance and migration time of the spray droplet group; constructing a heat and moisture energy transfer model between air and the spray droplet group; calculating the number of mass transfer units; and calculating the total heat and moisture exchange capacity within the upward-spraying heat exchange unit. The present invention can more accurately determine the heat and moisture exchange capacity of an upward-spraying heat exchange unit, provide support and assistance for the efficient extraction and utilization of heat and moisture energy from mine exhaust, and meet the needs of guiding the efficient extraction and utilization of energy in the device.

This invention provides an elastic band that reduces linear pressure as temperature rises. It comprises multiple fabric loop areas, each including nine warp rows and four weft rows. In one loop area, the first warp row and four weft rows are woven using a weft-over-weft weaving technique; the second, fourth, sixth, and eighth warp rows and four weft rows are woven using a three-weft-below-one-weft weaving technique; the third, fifth, seventh, and ninth warp rows and four weft rows are woven using a three-weft-below-one-weft weaving technique; the first warp row is made of spandex-covered yarn formed by pre-shrinking and twisting after heat stress relaxation; the second to ninth warp rows are made of polyester yarn, and the four weft rows are also made of polyester yarn. This elastic band reduces pressure on the body under rising temperatures, which is beneficial for heat and moisture exchange and improves comfort.

A heat and moisture exchanger (HME) for heating and / or humidifying the flow of air for breathing by a patient using heat and / or moisture recovered from a flow of gases exhaled by the patient, the HME having a heat and moisture exchange component and a thermally conductive member to facilitate heat transfer within the HME, the thermally conductive member being in contact with, or incorporated within, the heat and moisture exchange component, for incorporation into a patient interface having a plenum chamber pressurisable to a therapeutic pressure of at least 6 cm H2O above ambient air pressure. The HME is configured to be removably connected directly or indirectly to the plenum chamber.

The utility model discloses an anti-knotting anesthesia breathing pipeline which comprises a heat and humidity exchange filter shell lower cover, and a heat and humidity exchanger shell upper cover is arranged on one side of the heat and humidity exchange filter shell lower cover. A heat and humidity exchange medium and a filter membrane are arranged in the lower cover of the heat and humidity exchange filter shell, a breathing tube I and a breathing tube II are arranged on one side of the upper cover of the heat and humidity exchanger shell, and the upper cover of the heat and humidity exchanger shell further comprises two parallel inner conical joints conforming to YY. Standard regulations. When medical gas such as anesthetic gas is ventilated, bacteria and viruses are filtered through the breathing tube with the regular triangular hole and the filter membrane, heat and humidity exchange is carried out through the heat and humidity exchange medium, the temperature and humidity of the gas suitable for being inhaled are achieved, and finally the gas reaches the airway of a patient. And dead space is reduced, iatrogenic infection of bacteria and viruses and bending and knotting of a breathing pipeline are avoided, the installation process is simplified, and operation of a doctor is facilitated.

Disclosed is a heat and moisture exchange (HME) device for a laryngectomized or tracheostomized user having a paper-based housing. Also disclosed is a paper-based blank for a foldable housing for an HME device and a method of manufacturing an HME device.

This application relates to the field of heat exchange equipment technology, and in particular to a horizontally swept liquid film dehumidifying condenser. The horizontally swept liquid film dehumidifying condenser includes a shell and a flow equalization component and a fiber assembly disposed therein. The shell has a liquid inlet and a liquid outlet at both ends along a first direction, and air vents at both ends along a second direction. The fiber assembly includes multiple fibers extending along the first direction and arranged in a multi-row, multi-column array along the second and third directions. The flow equalization component is located between the fiber assembly and the liquid inlet, and is used to distribute the liquid during its descent, ensuring uniform diffusion of the liquid within the cross-section of the shell perpendicular to the first direction, thereby improving the heat and moisture exchange effect between the liquid and the airflow; simultaneously, it forms a liquid film on the surface of the fiber assembly, extending the gas-liquid contact path through the fiber assembly; and it also promotes droplet formation through the fiber assembly, effectively improving phase change heat transfer efficiency through the rapid formation and shedding of droplets.

The invention discloses an industrial efficient heat insulation cooler which comprises a square tower body, a left air humidification precooler, a left heat exchanger, a right air humidification precooler, a right heat exchanger and two exhaust fans, and a left air inlet and a right air inlet are formed in the left side wall and the right side wall of the square tower body respectively. The left air humidifying precooler and the left heat exchanger are arranged at a left air inlet in the square tower body, the right air humidifying precooler and the right heat exchanger are arranged at a right air inlet in the square tower body, and the left air humidifying precooler and the right air humidifying precooler are used for humidifying and precooling external air; the left heat exchanger and the right heat exchanger are used for conducting heat exchange between the cooling water and the humidified and precooled air. The humidification precooler-heat exchanger technology is adopted, heat and humidity exchange is conducted between water in the humidification precooler and air, the water is gasified and evaporated after absorbing heat, and therefore the air is humidified and cooled. And the humidified and cooled air can greatly improve the heat exchange efficiency of cooling water.

The invention relates to the field of auxiliary breathing control systems, in particular to an artificial nose control system which comprises an artificial nose, an airway breathing state judgment module and a wiping driving control module. The artificial nose comprises a main shell, a heat and humidity exchange filter module, an airway opening control module and a differential airflow sensor, the airway breathing state judgment module is in communication connection with the differential airflow sensor; and the wiping driving control module is in communication connection with the air passage opening degree control module. The air passage opening degree control module is connected with the main shell and is used for controlling the opening degree of the air passage; the differential airflow sensor acquires respiration data. According to the artificial nose, the driving module is used for controlling the multiple opening control valves to gather or disperse, so that the opening degree of the airway is accurately controlled. Meanwhile, a differential airflow sensor is further arranged to obtain breathing data, and the opening amount of the airway is determined in combination with other physiological indexes. Automatic self-adaptive adjustment of the resistance of the T pipe is achieved, and the timeliness and the success rate are improved.

An HME has a housing moulded in two parts of a thick, thermally-insulative foamed plastics to form an enlarged central region and opposite end walls. Separate patient and machine end couplings are bonded to openings in the end walls. The two housing parts are bonded end to end about an HME element formed by a strip of treated corrugated paper wound about a support sleeve.

Illustrative embodiments of heat and moisture exchange (HME) medical devices, as well as related methods, are disclosed. According to one aspect, an HME medical device may comprise an HME material configured to absorb heat and moisture from exhaled air and to return the heat and moisture to inhaled air. The HME medical device may also comprise a base including at least one wall defining a passageway for the exhaled and inhaled air, a lid that retains the HME material, and a tether connecting the lid to the base. The lid of the HME medical device may be movable between (i) a first position in which the lid is engaged with the base and the HME material is positioned in the passageway and (ii) a second position in which the lid is disengaged from the base and the HME material is not positioned in the passageway.

A multi-stage heat and moisture exchange fresh air air conditioner and control method relates to the field of air conditioning technology. This invention exchanges indoor exhaust air with outdoor fresh air through a heat and moisture film, then controls the connection between the compressor and each heat exchanger, as well as the spraying state of the humidifier, to efficiently and energy-efficiently control the flow direction of heat and water molecules. Through multi-stage heat exchange (heat and moisture film, three-heat exchanger heat pump, and condensate spray), it achieves control and management of indoor environmental temperature and humidity during seasonal operating mode switching. In isothermal dehumidification mode, the compressor uses a reversing valve to form a condenser in the second and third heat exchangers, and an evaporator in the first heat exchanger. A humidifier sprays water mist to assist in cooling. The heat and moisture exchange core, intake fan, and exhaust fan work in synergy, isothermally dehumidifying the outdoor fresh air before delivering it into the room and achieving indoor exhaust. The dehumidification and cooling and heating and humidification modes vary the operating state of the heat exchangers and the spraying state of the humidifier to achieve temperature and humidity regulation.

The present invention discloses a clothes dryer that combines a heat pump and a rotary dehumidifier. The dryer comprises a drying circulation air circuit, which sequentially includes a drum, an evaporator, a heat exchanger, a generating area of ​​a dehumidifier rotor, a medium-pressure condenser, and a drum. High-temperature, dry air is blown into the drum by a fan (a), where it exchanges heat and moisture with the clothes, becoming high-temperature, humid air. The air is then cooled and dehumidified by the evaporator, heated by regenerated circulating air through the heat exchanger, heated and dehumidified by the generating area of ​​the dehumidifier rotor, and heated by the medium-pressure condenser to become high-temperature, dry air. The air is then blown into the drum by fan (a). The dryer also includes a heat pump system. By combining a heat pump and a rotary dehumidifier, the present invention achieves better clothes drying results and shorter drying times than heat pump dryers.

The utility model discloses an internal cooling type solution heat exchanger. The heat exchanger comprises a frame, a plurality of transversely arranged heat exchange tubes are arranged on the frame, the two ends of each heat exchange tube are connected with a liquid inlet tube and a liquid outlet tube respectively, a plurality of filler plates are vertically arranged on the inner side of the frame at intervals, and the heat exchange tubes penetrate through through holes in the filler plates. The packing plate is arranged on the outer side of the heat exchange tube, so that a relatively stable liquid film can be formed on the surfaces of the packing plate and the copper tube while heat and mass exchange with a solution is realized, the contact area between the solution and air is increased, and heat and moisture exchange with the air is facilitated; the formation-disturbance-damage-formation process of the liquid film is repeatedly carried out, so that heat transfer and mass transfer of air and the liquid film are enhanced; no filler needs to be additionally arranged in the solution box, the size of the solution box can be reduced, then the size of the dehumidification unit is reduced, and cost and installation space are reduced.

The present application relates to warehouse environment control technical field, disclose a kind of warehouse temperature and humidity zoning synchronous regulation and energy consumption optimization control system, including industrial controller, temperature and humidity transmitter, variable frequency air conditioning unit and proportional-integral electric guide vane valve.The present application is by industrial controller to map environment dry bulb temperature and relative humidity into air specific enthalpy and absolute humidity, establishes heat and humidity exchange coupling matrix to generate enthalpy difference gradient;According to mass flow mapping table to obtain estimated value and calculate virtual state, meet the enthalpy drop condition and virtual mixed state is in dew point boundary line safety side when drive proportional-integral electric guide vane valve action to introduce low enthalpy air;Using enthalpy disturbance quantity to shift dew point critical boundary line to generate dynamic safety envelope surface, predict control trajectory to enter condensation risk side when triggering refrigeration dehumidification and heating compensation, environmental state point is back to safety side after cutting off heating instruction, reduce operating power consumption and avoid refrigeration and reheating energy consumption superposition.

The present invention discloses an ejector-assisted dual-condenser heat pump drying system and control method for material drying. The system comprises an air circulation loop and a refrigerant circulation loop. In the air circulation loop, wet air at the drying oven outlet is cooled and dehumidified by an evaporator, then passes through low-pressure and high-pressure condensers in sequence, heated to high-temperature dry air, enters the drying oven for heat and moisture exchange, dries the material, and simultaneously becomes wet air for recirculation. The refrigerant circulation loop comprises a variable-frequency compressor, a high-pressure condenser, an ejector, a low-pressure condenser, two electronic expansion valves, a flash evaporator, a subcooler, an evaporator, and temperature and pressure sensors. The present invention introduces an ejector to recover expansion work, reducing irreversible losses in the throttling process and improving the efficiency of the heat pump drying system. The flash evaporator and subcooler increase the subcooling of the refrigerant before the evaporator, improving the dehumidification capacity of the evaporator. The heat recovery effect of the subcooler prevents liquid from being sucked into the compressor, thereby enhancing system stability.

This invention discloses a mining path optimization method and system incorporating geological data, belonging to the field of path optimization technology. A mining path optimization system incorporating geological data includes a geological data modeling module and a mining path optimization module. This invention introduces the mining heat hazard mechanism into the path planning process, and by constructing mining environmental load data and an environmental saturation model, it achieves a quantitative assessment of the risks of high temperature, high humidity, and pollutant accumulation, avoiding the heat hazard hazards caused by traditional path planning neglecting environmental safety factors. Based on real-time geological monitoring data and roadway topology, it dynamically calculates the heat and moisture exchange capacity and pollutant dilution capacity of roadway nodes, enabling the path planning results to accurately reflect changes in underground ventilation and environmental conditions, thus improving the accuracy of planning decisions.

The utility model discloses a heat and moisture exchange filter convenient for sampling, which comprises a body, and an upper cover of the body is provided with an upper pipe body and a sampling pipe which are communicated with an upper cavity; the sampling pipe and the upper cavity are provided with a communicated channel, and a sampling channel is formed in the upper surface of the lower part of one side wall of the channel; the upper part of the channel is provided with internal threads and a threaded plug column, and the end part of the threaded plug column is smaller than the end face of the sampling pipe; the lower part of the threaded plug column is in extrusion fit with the lower part of the channel and blocks the sampling channel; the thread stroke of the thread plug column is greater than the stroke of the thread plug column separating from the sampling channel; according to the utility model, the sampling port is very convenient to seal and open, the butt joint of the sampling port is facilitated, and the problem of pollution caused by falling of the sealing cover is avoided.

The utility model discloses a deep heat recovery fresh air handling unit suitable for severe cold and cold areas, which comprises an air supply system and an air exhaust system, and a primary efficiency filter section, a heat recovery section, an air cooling condensation section, a fresh air mixing section, a primary and medium efficiency filter section, a hot and cold coil section, a humidifying section and an air supply section are sequentially arranged in the air supply system. An air return air section, the heat recovery section, an air cooling evaporation section, an air exhaust air section and an air exhaust section are sequentially arranged in the air exhaust system, and the heat recovery section is a total heat exchanger and is used for heat and humidity exchange between fresh air and exhaust air so as to improve the temperature and humidity of the fresh air and reduce the temperature and humidity of the exhaust air. According to the utility model, the traditional high-temperature water preheating coil pipe is effectively replaced, and the dual goals of energy conservation, consumption reduction and equipment protection are realized.

1. Name of the product in this design: Ventilation adapter kit. 2. Purpose of this design: This design is used for respiratory exchange, filtration, and in conjunction with a breathing mask to adjust the moisture content of the airway. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design points: 3D model of Kit 1. 5. Other situations requiring explanation: Kit 1 is a ventilation adapter for a breathing mask, and Kit 2 is a heat and moisture exchange filter for the ventilation adapter.

The invention discloses a manufacturing method of a heat exchanger and a heat exchange element, relates to the technical field of ventilation systems, and can comprehensively improve the heat and humidity exchange area of a membrane material and the heat exchange element so as to improve the exchange efficiency. The heat and humidity exchange area of the membrane material and the heat exchange element is comprehensively improved, and the exchange efficiency is improved. The heat exchanger comprises a machine shell and a heat exchange core body. The heat exchange core body comprises multiple layers of heat exchange elements. The heat exchange element comprises a heat exchange layer. A fresh air channel and an exhaust air channel which are independent of each other are formed in the machine shell. The heat exchange core body is arranged in the machine shell. The multiple layers of heat exchange elements are sequentially arranged in a stacked mode. The heat exchange layer is made of high polymer materials, and protruding parts which are arranged at intervals in the first direction are formed and extend in the second direction. The first direction and the second direction intersect and are both perpendicular to the arrangement direction of the multiple layers of heat exchange elements. The heat exchanger is used for exchanging the temperature between inlet air and exhaust air.

The utility model relates to medical equipment technical field, concretely relates to a medical heat and moisture exchanger, including the casing, the casing top is equipped with the machine end interface, is equipped with the heat and moisture exchange layer in the casing, the casing bottom is equipped with the patient end interface, the lateral wall of patient end interface is connected with the dosing pipe, the piston is slidably connected in the dosing pipe, the dosing pipe is fixedly connected with the limiting ring in, is equipped with the spring between the piston and limiting ring, is set up in a plurality of through -holes on the piston, the one end of dosing pipe is connected with the adjusting pipe, and the one end of adjusting pipe is equipped with the sealing ring, the utility model discloses utilize the air pressure dynamic change of inspiration process, realize the automatic opening and closing control of through -hole, make the inspiration middle -term completely open and ensure that the atomized medicine high -efficient delivery, the through -hole is closed in advance at the end of inspiration to facilitate the patient absorption residual atomized medicine, like this can reduce the atomized medicine reflux situation when the patient exhales, thereby reduce heat and moisture exchanger blockage and atomized medicine waste situation, guarantee the treatment effect.