69results about How to "Atomization fast" patented technology

Apparatus suitable for atomizing and vaporizing at least a first liquid by colliding at least one gas with the first liquid. The apparatus includes a gas inlet through which the gas enters the apparatus and a first liquid inlet through which the first liquid enters the apparatus. A discharge end of the apparatus includes at least one first liquid discharge outlet through which at least one stream of the first liquid is discharged from the apparatus. The discharge end also includes at least one gas discharge outlet through which at least one stream of gas is discharged from the apparatus to collide with and thereby atomize the discharged stream of the first liquid. A first liquid passageway interconnects the first liquid inlet with the first liquid discharge outlet. A gas passageway interconnects the gas inlet with the at least one gas discharge outlet. In one embodiment, the gas passageway comprises at least one gas chamber in thermal contact with an initial portion of the first liquid passageway such that a heated quantity of the gas in the chamber preheats the first liquid in the initial portion of the first liquid passageway. In alternative embodiments, the gas passageway includes a pressure dampening chamber allowing gas to be continuously discharged without pulsating.

A method and device for heating control of an electronic cigarette are provided, wherein, the method includes steps as below: S1. sensing whether there is a smoke signal via a sensor or a switch, if yes, executing step S2; S2. activating a timer to record time and turn on a semiconductor switch so as to heat the heating element in a full output power mode; S3. heating the heating element in a constant power mode when the recording time of the timer arrives at a first preset time T0. When implementing the present invention, the adoption of the two heating methods for heating element makes an optimized atomization effect and an excellent taste of smoking possible, which is not affected by the changeable voltage of the battery.

A method and device for heating control of an electronic cigarette are provided, wherein, the method includes steps as below: S1. sensing whether there is a smoke signal via a sensor or a switch, if yes, executing step S2; S2. activating a timer to record time and turn on a semiconductor switch so as to heat the heating element in a full output power mode; S3. heating the heating element in a constant power mode when the recording time of the timer arrives at a first preset time T0. When implementing the present invention, the adoption of the two heating methods for heating element makes an optimized atomization effect and an excellent taste of smoking possible, which is not affected by the changeable voltage of the battery.

Method for treatment of fluid hazardous, organic waste materials, where a plasma of 2000-5000° C. temperature is generated by means of an electric arc in a plasma generator, the plasma torch is directed into a reactor, the reactor consists of three zones (4A, 4B, 4C), the plasma torch being introduced downwards into the uppermost first zone (4A), the fluid waste (1) being sprayed into the plasma torch in the first zone (4A), where it is heated to a temperature range of 1300-1600° C., the mixture of the plasma and the waste is introduced into the second zone (4B) of the reactor, where an oxidizing material is added (5) to the mixture, the combustion gas produced in the second zone (4B) is then led into the third zone (4C) of the reactor, where it is cooled rapidly by water spraying to a temperature range of 120-160° C., the cooled combustion gas is removed from the third zone (4C) of the reactor is led into a cooler. The plasma torch is generated from the mixture of carbon dioxide and oxygen, the oxidizing material introduced into the second zone (4B) of the reactor is a mixture of carbon dioxide and oxygen. Subsequently the water content of the combustion gas is separated by condensing and is removed and the residual combustion gas is removed.

The invention relates to a production method for polyurethane enveloped controlled release fertilizer. The production method comprises the following steps: preheating granulated fertilizer in a fluidized bed in a fluidizing state; atomizing liquid paraffin, and pretreating the surface of the granulated fertilizer; mixing polyatomic alcohol and isocyanate in a nozzle, atomizing the mixture fast, and spraying the mixture onto the surface of the granulated fertilizer; controlling material adding speeds to ensure that polyurethane reaction can be fulfilled fast; adding liquid paraffin and carrying out surface anti-sticking treatment after the filling of reaction materials. According to the invention, the fluidized bed is adopted as enveloping equipment, polyatomic alcohol and isocyanate are used for spraying and enveloping after being premixed, and the adding speeds are regulated in a matched manner, so that the whole enveloping reaction process is fast and continuous. The production method can improve the polyurethane enveloping efficiency to a relatively large extent, and ensure relatively stable and reliable quality of the enveloped fertilizer due to continuous reaction.

A fuel injection valve for internal combustion engines, having a valve member guided axially displaceably, counter to a closing force, in a blind bore of a valve body. The valve member on an end toward the combustion chamber has a conical valve sealing face, with which the valve sealing face cooperates with a conical valve seat face on the inward-projecting closed end of the blind bore. A blind bore region, adjoins the conical valve seat face downstream, from which region injection openings lead into the combustion chamber of the engine. The blind bore wall region that receives the injection openings is embodied conically, and the injection openings have a certain minimum spacing from an upper and a lower end of this conical blind bore wall region.

The invention relates to the field of desulfurization and denitrification devices and discloses a Venturi tube used in a plate type absorption tower. The Venturi tube comprises a Venturi tube body, wherein the Venturi tube body comprises a gas inlet section, a shrinkage section, a diffusion section and an exhaust section which are mutually connected in sequence from left to right; the gas inlet end of the gas inlet section is connected with the gas outlet end of a flue gas conveying pipeline; the shrinkage section comprises an atomization cavity of a flat spherical cavity structure; a plurality of spray guns are uniformly mounted on the outer side of the atomization cavity; and one end of eachspray gun penetrates through the atomization cavity and extends to the inner wall side of the atomization cavity. A liquid fed into the atomization cavity is instantaneously atomized through an impeller which is driven by high-speed air flows, and the atomized liquid is directly sufficiently mixedwith flue gas inside the atomization cavity along with stirring of the impeller, so that compared with conventional co-spraying of liquids and flue gas, atomization of the liquid of the technical scheme is rapid, the atomizedliquid can be sufficiently mixed with the flue gas, and in addition, the contact time of the atomized liquid with the flue gas is long.

The invention relates to a generating device for a static crushing agent. The generating device comprises a barrel-shaped shell. The shell is sequentially filled with a combustible agent, an electrolyte solution and the static crushing agent from inside to outside in a layered manner. The combustible agent wraps an electronic igniter. A blocking block is arranged on an opening of the shell to sealthe shell. According to the technical scheme, the combustible agent, the electrolyte solution and the static crushing agent are contained in the shell in the layered manner, the shell is firstly placed in an expansion hole in rock during rock crushing, and the combustible agent is ignited through the electronic igniter; and the combusted combustible agent releases a large amount of heat, and thetemperature of the electrolyte solution and the static crushing agent in the shell rises. Due to the fact that the electrolyte solution is close to the combustible agent, the electrolyte solution canbe fast atomized. The atomized electrolyte solution is in contact with the heated static crushing agent, the static crushing agent can be fast cured and expanded in sealed space, and the rock crushingspeed is increased.

The invention discloses a combustion chamber with a combustion area adjusted on the basis of inlet swirl rectifying support plates, and the special support plates thereof. The combustion chamber comprises an outer casing, an inner casing, a central cone and a fuel injection system as well as a shunt ring located between the inner casing and the outer casing; the shunt ring is arranged around the inner casing concentrically, and the outer casing is arranged at the periphery of the shunt ring concentrically; the swirl rectifying support plates are fixed between the shunt ring and the inner casing; and each special swirl rectifying support plate comprises a side part and a plurality of blades connected to the side part, and the blades are rotated around the side part. According to the combustion chamber, active control over a high temperature area of the combustion chamber can be achieved; and the high-efficiency and low-flame retardance combustion of the combustion chamber is achieved.

The invention discloses facial beautifying apparatus. The facial beautifying apparatus comprises a shell, a steam nozzle, a massage head, a steam switch, a charging port and a battery. The facial beautifying apparatus integrates face steaming equipment and massaging equipment, wherein the massaging equipment adopts radio frequency (RF) wave and ceramic-magnetic-alloy polycrystalline composite wafers prepared by a nano-ultrafine technology. Acting on facial acupoints, the facial beautifying apparatus is capable of effectively penetrating deep skin at a depth up to 9 mm by strong penetration, activation and metabolism performance of bio-ion lightwave of the composite wafers, thereby causing high-frequency vibration at the acupoints so as to activate basal cells and cells in deep sleep; and moreover, water molecules are rapidly atomized by adopting high-frequency atomizing-vibrating, so that absorption is facilitated. In addition, face massage can be performed while carrying out of facialsteaming-beautifying, so that time and labor can be saved; and moreover, the facial beautifying apparatus has reduced space occupation size, and is convenient to carry.

The invention discloses a medical atomizer. The medical atomizer includes a shell, a medicine cup, a water tank, an ultrasonic generator, a central control device, a corrugated pipe and a nasal mask;the nasal mask is connected with a mist discharge opening in the shell through the corrugated pipe; a drying device is arranged in the mist discharge opening; the medicine cup, the water tank, the ultrasonic generator and the central control device are all arranged in the shell; the medicine cup is arranged above the water tank, and the bottom of the medicine cup is provided with an acoustic transmission membrane; the ultrasonic generator is located below the water tank; the central control device is arranged below the ultrasonic generator and is electrically connected with the ultrasonic generator for driving and controlling the ultrasonic generator; a side door is arranged on one side of the shell; one side, located above the medicine cup and far away from the mist discharge opening is provided with a baffle; the part, located above the mist discharge opening, of the interior of the shell is provided with a flow guide plate at a certain angle; an air blowing device is arranged abovethe baffle, and the air blowing device is used to blow an atomized medicine liquid to the mist discharge opening. The medical atomizer provided by the invention has a good atomization effect and a lowcost.

The invention provides a manufacturing method of an aerial fog generation device. The method includes the steps that a plate body is provided and subjected to surface treatment, wherein surface treatment includes removal of oxide films on the surface of the plate body, cleaning, drying and coating of protective films on the upper and lower sides of the plate body; a plate is manufactured; the surface of the plate body is coated with the obtained plate; exposure, baking and etching are carried out; cleaning and demolding are carried out to obtain a primary base plate, wherein the primary base plate comprises a heating area, a first electrode area and a second electrode area, a plurality of mesh holes are formed in the heating area, and the first electrode area and the second electrode areaare isolated from each other and electrically independent; an oil guide element is provided, the heating area is attached to the surface of the oil guide element, so that the bent first electrode areawraps one side of the oil guide element, and the bent second electrode area wraps the other side of the oil guide element. Mechanical work of heating pieces is achieved, large-scale production is achieved, the cost is low, and compared with a manual operation mode, the cost is greatly reduced.

The invention relates to an atomizing nozzle special for a perfluorohexanone fire extinguisher and a using method and application of the atomizing nozzle, and belongs to the technical field of firefighting equipment. A connecting pipe is internally provided with an agent conveying pipeline and a first agent confluence cavity which communicate, an atomizing spray pipe is internally and sequentiallyprovided with a second agent confluence cavity, a conical atomizing pipeline and a straight cylinder spraying guiding pipeline which communicate, an atomizing core groove is formed in the bottom of the second agent confluence cavity, an atomizing through hole is formed in the bottom of the atomizing core groove, an atomization core is correspondingly arranged in the atomizing core groove, after the connecting pipe and the atomizing spray pipe are matched in a threaded connection mode, the first agent confluence cavity and the second agent confluence cavity are combined to constitute an atomizing confluence cavity, and the atomizing confluence cavity communicates with the conical atomizing pipeline and the straight cylinder spraying guiding pipeline through the atomizing through hole. According to the atomizing nozzle special for the perfluorohexanone fire extinguisher and the using method of the atomizing nozzle, during fire extinguishing, gas-liquid two-phase spraying can be ensured,spraying in a column form in a fire-extinguishing area is ensured, and maximum use of a perfluorohexanone agent and the fast and efficient fire-extinguishing effect are realized.

The invention discloses an internal combustion engine water mist flow control mechanism, a water combustion-supporting system and a control method of the water combustion-supporting system. The internal combustion engine water mist flow control mechanism comprises a shell, at least one valve, a signal acquisition mechanism and an electronic control unit, wherein the shell is used for forming a water mist flow channel, the valves are arranged in the shell and used for controlling the water mist flow passing through the shell, the signal acquisition mechanism is used for detecting the magnitude of the mist flow in the shell, and the electronic control unit is used for controlling the opening degrees of the valves according to the mist flow magnitude detected by the signal acquisition mechanism. By means of the internal combustion engine water mist flow control mechanism, the water combustion-supporting system and the control method of the water combustion-supporting system, control over water throughput can be achieved, and efficient and stable operation of a water combustion-supporting engine is guaranteed.

The invention relates to a bait bulking formula feed for fishing, which is prepared from the following raw materials in parts by weight: 6-10 parts of betaine, 1-2 parts of taurine, 4-8 parts of amino acids, 1-2 parts of citric acid, 1-2 parts of allicin, 3-6 parts of fish meal, 8-12 parts of white sugar, 60-100 parts of sleeve-fish ointment, 400-600 parts of rice hull powder, 80-120 parts of bulking agent and 150-200 parts of wheat flour. The bait bulking formula feed provided in the invention is convenient to use and has no toxic or harmful effects. Food calling effect on different kinds of freshwater fishes is achieved through the addition of various amino acids. In addition, with the adoption of the bulking agent, the bait can be quickly atomized in water, the smell can be quickly diffused, and therefore, the aim of inducing the fishes to bite a fishhook is achieved.

The invention belongs to the technical field of biology and new medicines, and particularly discloses a microbial pesticide spraying mechanism for a plant protection unmanned aerial vehicle. A bearingsupport is arranged below the unmanned aerial vehicle, a pesticide liquid preparation device connected with the bearing support is included, and the pesticide liquid preparation device comprises a bearing fixing frame connected with the bearing support; a pesticide liquid temperature control device and an atomization spraying device which are matched with the pesticide liquid preparation device are arranged on the pesticide liquid preparation device; the atomization spraying device comprises a pesticide spraying frame and a pesticide liquid atomizer arranged on the pesticide spraying frame, and a pesticide recycling device matched with the pesticide liquid atomizer is arranged on the pesticide spraying frame; and a spraying control device matched with the unmanned aerial vehicle and an abnormal alarm device matched with the spraying control device are further arranged on the pesticide liquid preparation device.

The invention belongs to the related technical field of flue gas purification, and discloses a desulfurization and denitrification system which comprises an H2O2 supply device, an H2O2 conveying pipeline, an H2O2 gasification mixing device, a microwave generation device and a catalytic oxidation device, the H2O2 conveying pipeline is located in a flue gas pipeline, one end of the H2O2 conveying pipeline is connected with the H2O2 supply device, and the other end of the H2O2 conveying pipeline is connected with the H2O2 gasification mixing device; a spraying grid is arranged at the outlet end of the H2O2 gasification mixing device, the spraying grid is located in the flue gas pipeline, and mixed gas of carrier gas and H2O2 is atomized through the spraying grid and then mixed with flue gas; the microwave generation device and the catalytic oxidation device are connected with the flue gas pipeline, are positioned at the downstream of the spraying grid, and are used for catalytically oxidizing atomized H2O2 into OH free radicals. Through combination of heating atomization and microwave catalysis, H2O2 rapidly excites a large number of OH free radicals to meet the requirements of flue gas desulfurization and denitrification, the efficiency is high, and the size is small.

The invention provides a medicine spraying and oxygen conveying breathing mask for a respiratory medicine department, belongs to the technical field of medical equipment for the respiratory medicine department, and solves the problems that a breathing mask is poor in liquid medicine atomization and absorption and does not have the functions of oxygen supplementing, medicine adding and the like. The medicine spraying and oxygen conveying breathing mask comprises an air blowing box and a mask body, wherein an air blowing mechanism is arranged in the air blowing box; the air blowing mechanism comprises an air outlet pipe; the air outlet pipe is connected with an elastic atomization pipe; the elastic atomization pipe is connected with an atomization bottle; symmetrical communicating pipes arearranged on the two sides of the mask body; the atomization bottle is connected to the middle end of the mask body through a pipeline; a mouth piece is arranged at the middle end of the inner side ofthe mask body; an oxygen box is fixed to the upper end of the air blowing box; the upper end of the oxygen box is connected with a gas filtering bottle through a valve body; the upper end of the gas filtering bottle is connected with an elastic oxygen pipe; and the elastic oxygen pipe is connected with the communicating pipes. According to the invention, liquid medicine can be rapidly atomized andeffectively and rapidly enters the body of a patient, and the liquid medicine directly reaches a focus for rapid treatment; and meanwhile, oxygen and medicament can be effectively supplemented, and air cooling heat dissipation can be also conducted, so that the functions are complete.

The invention discloses an atomizing nose therapy cleaning device. The device comprises a device box, a liquid inlet buckling cap, a liquid outlet buckling cap, a handle, a mask and a working pipe, the liquid inlet cap is installed on the left side of the top of the device box, the liquid outlet buckling cap is installed on the right side of the top of the device box, the device box is connected with the top of the handle through the liquid outlet buckling cap, and the handle is connected with the bottom of the working pipe through the mask. The device has a novel structure, treatment, sterilization and cleaning can be effectively conducted on a patient, the working intensity of medical workers is greatly reduced, the working efficiency of the medical workers is improved, the cost is lower, and the device is suitable for the popularization in large and small hospitals.

The invention provides a fishing hook special for fishing bullheads. The fishing hook comprises a fishing hook bodies, a material collection trough and lines. When each component is combined, the upper part of the material collection trough is combined by a fixing line and is fixed on the line, then the main line passes through the material collection trough and downwards leads; one fishing hook body is arranged at the rear end of the main line; two secondary lines respectively pass through material outlet holes in the left and right of the material collection trough and downwards lead; one fishing hook body is arranged at the rear end of each secondary line; the fishing hook bodies on the two secondary lines are higher than the fishing hook body on the main line; and the two fishing hook bodies are parallel. The structural components of the fishing hook are novel in conception; when the fishing hook is applied, three fishing hook bodies are used, fish absorbs bait into mouth, and one or all of the three fishing hook bodies can be absorbed into the mouth of the fish, so that the hooking probability is higher; the probability for hooking the fish is higher. Simultaneously, when the bait is placed in the material collection trough, the bait is directly pressed into the material trough, in water, the bait continuously disperses around from material outlet holes; the bait is rapid to atomize and can attract the fish to eat; the effect is obvious.

The invention discloses a urea Urea-SCR mixer of a diesel internal combustion engine after-treatment system. The mixer comprises a spiral mixing cavity at the front end and a flow equalizing cavity at the rear end. The spiral mixing cavity comprises an air inlet end panel, an air outlet end panel and a spiral rotational flow guide plate, the flow guide plate forms a vortex convergence type airflow channel from an air inlet to an air outlet, a convex peak type flow guide plate is arranged in the channel in the flowing direction of fluid, a plurality of groups of splitter plates are arranged, and a flow equalizing disc is arranged in the flow equalizing cavity in the radial direction of a cylinder body. According to the mixer, hot tail gas flow is distributed and guided, and a urea aqueous solution is strongly crushed and atomized, so that the urea aqueous solution is quickly and fully atomized and pyrolyzed. A mixed gas flows at a high speed in the spiral vortex convergence type airflow channel, so that uniform and sufficient mixing is achieved. The convex peak type flow guide plate and the splitter plates are used for distributing, guiding, crushing and disturbing hot air flow which is mixed and flows at a high speed. The flow equalizing disc is used for distributing and guiding the high-speed rotational flow entering the rear cavity, so that the conversion rate of ammonia is greatly improved.

The invention discloses a hollow tar storage assembly for an electronic cigarette, an assembling method of the hollow tar storage assembly and the electronic cigarette. The hollow tar storage assemblycomprises tar storage cotton arranged in an tar storage cavity of the electronic cigarette, wherein an axial accommodating hole is formed in the tar storage cotton, a heating body is arranged in theaxial accommodating hole of the tar storage cotton, the heating body is connected with a heating assembly arranged in the electronic cigarette through a lead wire, and the axial accommodating hole penetrates through the tar storage cotton, so that the tar storage cotton is of a hollow structure with openings in the two ends. By arranging the hollow tar storage cotton and arranging the heating bodyin the tar storage cotton, on one hand, the assembling procedure is simplified, installation is easier and more convenient, and the tar leakage problem is not likely to happen, and on the other hand,heating is conducted from the interior of the tar storage cotton, so that tobacco tar in the tar storage device can be rapidly atomized and fully atomized, and the product quality is improved.

The invention discloses a heating device for electronic cigarettes, belonging to the field of electronic cigarettes, comprising a tube body, a heating body arranged on the outer circumference of the tube body, a positive electrode and a negative electrode connected to the heating body; the tube body The main body is in the shape of a hollow tube, and the heating element is formed by connecting a plurality of serpentine heating elements end to end in series. One end of the heating element is connected to the positive electrode, and the other end is connected to the negative electrode. The beneficial effect of this patent is: a heating element composed of a plurality of serpentine heating parts is arranged on the surface of the tube body, and the heat is generated through the resistance of the heating element and transferred to the inner side of the tube body, so that the oil fume in the tube body is quickly atomized to achieve purpose of heating.

The invention discloses an aerosol generating method, relating to the technical field of aerosol production. The method comprises the following steps: S1, a user sucks through a mist outlet, outside air enters an aerosol generating device, the aerosol generating device automatically detects the flow or / and air pressure of the entering air, and when the flow or / and air pressure of the entering airis / are larger than a preset threshold value of the aerosol generating device, the aerosol generating device automatically controls a heating device to be started; or / and, the user starts an air supplydevice and the heating device, and the air supply device introduces air into the aerosol generating device; and S2, the heating device heats and atomizes an aerosol generating substrate in the aerosol generating device, and the atomized aerosol is mixed with external air or / and gas to form aerosol. According to the aerosol generating method, the aerosol can be generated in a suction mode, a userdoes not need to suck the aerosol, the aerosol generating device is used for automatically generating the aerosol, and the user can select different working modes according to requirements.

The invention provides a nozzle assembly including an inner tube and an outer housing. The inner tube terminates at an outlet end and defines a first flow passage. The first flow passage directs firstfluid flow to the outlet end in a primary flow direction. The outer housing includes a tubular side wall and an end wall. The tubular side wall defines a central axis. The end wall defines an exit orifice and an interior guide structure. The outlet end is axially aligned with the exit orifice. A second flow passage is established between the inner tube and the outer housing. The interior guide structure is configured and arranged relative to the outlet end to direct at least a portion of a second fluid flow from the second flow passage toward the outlet end in a direction initially opposite the primary flow direction for generating mixed fluid flow.

The invention discloses a medical vaporizer comprising a shell, a medicine cup, a water tank, an ultrasonic generator, a central control device, a corrugated pipe and a nasal mask. The nasal mask is connected with a mist exhaust port in the shell through the corrugated pipe; and a drying device is arranged in the mist exhaust port. The medicine cup, the water tank, the ultrasonic generator and thecentral control device are all arranged in the shell. The medicine cup is arranged above the water tank, and a sound transmission film is arranged at the bottom of the medicine cup; the ultrasonic generator is arranged below the water tank; the central control device that is arranged below the ultrasonic generator and is electrically connected with the ultrasonic generator is used for driving andcontrolling the ultrasonic generator. A side door is arranged on one side of the shell, and the size of the side door matches that of the medicine cup. A baffle plate is arranged on one side, far away from the mist exhaust port, above the medicine cup; and a flow guide plate is arranged in the shell and above the mist exhaust port at a certain angle. The medical vaporizer provided by the invention is good in atomization effect and low in cost.

The invention discloses an atomization oil injection CO2 scroll compressor under a large pressure difference working condition, and relates to the technical field of compressors, the atomization oil injection CO2 scroll compressor comprises a cylinder body, a lower end cover and a static scroll plate, the lower end cover is connected with the cylinder body through a bolt, a first annular sealing groove is formed in the contact surface of the lower end cover and the cylinder body, and the static scroll plate is connected with the cylinder body through a bolt; a second annular sealing groove is formed in the face, making contact with the barrel, of the static vortex disc, the static vortex disc is located above the barrel, the lower end cover is located below the barrel, the static vortex disc comprises an end plate, an involute type vortex body and a rotational flow cone straight nozzle, the involute type vortex body is composed of the sealing groove and a kidney-shaped exhaust port, and nozzles are symmetrically formed in the end plate. According to the atomization oil injection CO2 scroll compressor under the large pressure difference working condition, the superheat degree of a refrigerant can be reduced, an oil film is formed in a leakage channel, the leakage amount of the refrigerant can be reduced, and therefore the exhaust temperature is reduced, and reliable and efficient operation of the scroll compressor is guaranteed.

The invention discloses an external pressure-storage type perfluoro-hexanone splitting spray head. The splitting spray head comprises a spray head body, a flow guide sleeve and a splitting pipe, wherein a medicament channel and a power gas channel are arranged in the spray head body, one end of the flow guide sleeve is connected with the spray head body, the inner wall of the other end of the flowguide sleeve is provided with a protruding part, the splitting pipe communicates with the medicament channel, and is provided with a plurality of splitting holes in the circumferential direction, thespliting pipe extends to the outside of the flow guide sleeve, and is provided with a shielding part, and a medicament refining channel is formed between the protruding part and the shielding part. The external pressure-storage type perfluoro-hexanone splitting spray head has the advantages that the structure is simple, and the atomization performance and the gasification speed are improved favorably.

The invention relates to a method for altering the visual performance of a subject using an optical system arranged in front of at least one eye of the subject, and comprising: b) determining an optotype; c) displaying the optotype to the subject in such a way that it is visible by the subject through said optical system; d) assessing the visual performance of the subject viewing the optotype through the optical system; and e) adding a positive or negative altering value of spherical optical power to the optical system. According to the invention, the method comprises, before step b): a) choosing a target value of visual performance; and in that, at step b), said optotype has a size which is determined depending on said target value of visual performance; at step e), said altering value ofspherical optical power is determined depending on said target value of visual performance.