56 results about "Drop size" patented technology

A cooler for an air conditioning system or other system having a heated surface to be cooled has an array of nozzles for issuing a fine spray of liquid. A fan of the cooler induces flow of air over a surface to be cooled, the nozzles issuing into the flow of air the fine spray at a distance from the heated surface such that the liquid of the fine spray is fully evaporated prior to contact with the heated surface. Drop sizes of 20 to 30 microns are typical.

An atomizer, comprising a pre-filming region comprising a surface configured to reduce a mean drop size of a liquid to be atomized, wherein the surface has an effective contact angle, with reference to the liquid, of less than about 30 degrees; and a lip portion disposed at an end of the pre-filming region and configured to create hydrodynamic instabilities in a liquid film, wherein the lip portion comprises an alternating pattern of wetting and non-wetting surfaces, wherein the non-wetting surface comprises a contact angle, with reference to the liquid, of greater than 90 degrees, and the wetting surface comprises a contact angle, with reference to the liquid, of less than 90 degrees.

A spray injection analysis and nozzle configuration system is described having a user input unit that collects spray system input parameters and relays the collected parameters to a fluid performance matching unit and/or problem geometry unit for subsequent processing. The user inputs basic system parameters, including the desired spray fluid characteristics, to obtain suggested system configuration, including spray nozzle types and quantities. Accuracy of suggested spray nozzle type and configuration is increased via approximating the viscosity and/or surface tension parameters of the desired spray fluid with that of collected performance data. When a user already knows the desired spray nozzle type and associated system parameters, the user input unit routes this information to the problem geometry unit for creation of a problem geometry file, including calculation of the drop size distribution and spray velocity, and performance modeling via the fluid modeling unit.

The invention provides a minimal quantity lubricating system device. The device comprises a box, an oil way system, a gas way system, a power system and an injection system. The power system comprises a pneumatic motor and an oil liquid driving assembly. The oil liquid driving assembly comprises a driving base, a rolling body, a sleeve and an end cap B. The oil way system comprises an oil tank, a guide pipe and an oil liquid hose. The gas way system comprises a connector A, a gas flow regulating valve, a gas pipe A, a connector B, a connector C and a check valve. The injection system comprises an injection valve body, a piston, an oil amount regulating handle and an end cap A. The pressure of lubricating oil is regulated by rotating the oil amount regulating handle, so that the injection speed and the oil drop size of the lubricating oil are changed. The flow of compressed air is regulated by rotating the gas flow regulating valve, so that the oil amount of the lubricating oil is changed. The minimal quantity lubricating system device is compact in structure and easy to use, and does not need a power source. The industrial commonly used 0.8-1 MPa compressed air is used as a power source, the oil amount and oil drop size can be regulated, and the minimal quantity lubricating system device can be used for general production fields or anti-explosion special environment.

The invention relates to a measuring method of oil drop sizes. The measuring method comprises the steps: manufacturing a two-phase flow fluid sampler, wherein a middle sampling shooting section is shaped like flat cuboid space and is made of transparent materials; connecting both ends of the two-phase flow fluid sampler to a to-be-measured pipeline by flanges, and arranging a high-speed camera lens opposite to two-dimensional surfaces formed by long edges and wide edges of the sampler, so as to shoot fluid in the sampler when oil-water two-phase flow flows across the middle sampling shooting section of the sampler; extracting oil drop edges by utilizing a multi-scale edge detection algorithm; processing the extracted edges and dividing the extracted edges into oil drop adhering images and oil drop non-adhering images; dividing the oil drop adhering images by utilizing a watershed algorithm, and then performing circle fitting operation; directly performing circle fitting operation on the oil drop non-adhering image; integrating two fitting results, so as to obtain an oil drop edge extraction result chart; and calculating the diameter D of each oil drop. By using the measuring method of the oil drop sizes, which is provided by the invention, the size of each oil drop can be accurately measured on the basis of obtaining a high-definition oil-water two-phase flow image.

The present invention relates to crude oil-water separation processes, specifically desalting in a petroleum refinery. More particularly, the present invention relates to a method and system for increase coalescence rates of water drops in a desalter

The invention discloses a comprehensive test device and method for rapid solidification heat transfer performance. The comprehensive test device comprises a metal smelting system, a particle size andspeed control system and a sample collection and measurement system; the metal smelting system comprises a graphite crucible and an infrared thermometer with temperature feedback and is used for heating a metal test sample into liquid; the particle size and speed control system comprises a particle size selector used for controlling dropping size of molten metal droplets and a static electric field used for controlling dropping speed of the molten metal droplets; the sample collection and measurement system comprises a cooling base, a high-speed camera, a thermocouple and a computer and is used for bearing and cooling the metal droplets dropped from the metal smelting system and acquiring data. By the arrangement, low cost and less consumption of materials are achieved, the test method issimple in operation, test results are accurate, initial solidification conditions of the metal droplets in different dropping states (dropping size and dropping speed) can be tested comprehensively, the entire rapid solidification process can be reflected clearly, and high persuasion is achieved.

A dispenser and methods for transferring liquids are disclosed. The dispenser may include a capillary tube with tip having an aperture, a piezoelectric actuator coupled to the capillary tube at a location. Actuation of the piezoelectric actuator causes a pressure wave to propagate along the capillary tube toward the tip such that radial motion at the location is transmitted as distally extending axial motion of the tip, thereby causing a droplet of a predetermined volume to be ejected from the aperture. In some embodiments, the capillary tube has a modulus of elasticity in a range which dampens acoustical noise from the actuation and provides single drop stability over a range of drop sizes.

The ejecting and sediment method choosing the size of the metal liquid drop deals with the ejecting sediment method. Aiming to the drawback of existing ejecting sediment method incapable of gain the high quality billet, the invention provides the ejecting sediment method of choosing the size of the metal liquid drop, the metal melting liquid (1) and the charge source (2) in the ejecting sediment setting are connected, the electric field or the magnetic field or the electromagnetism field is fixed between the nozzle (3) and the billet (4), the direction of the electric field and the magnetic field is vertical with the prolonged line of the axes of the metal melting drop nozzle (3), the placed electric field power and the magnetic field power of the metal liquid drop gushed from the nozzle (3) are controlled to reach the reverse direction. The invention adopt the restricting method of connecting the electric field, the magnetic field or the electromagnetism field, the metal liquid drop ejected from the ejecting sediment can be separated, the separated little size of the metal liquid drop is used for producing the billet to improved the quality of the billet highly.

The invention provides a method for preparing gold nanoclusters based on a microfluidic chip and belongs to the field of gold nanocluster synthesis methods. The method is characterized in that gold nanoclusters which have small monodisperse particle sizes and are protected by an alkyl carbon chain sulfhydryl monolayer are synthesized based on the microfluidic chip, hydrophobic modification is performed on the inner wall of the chip channel, and drops can be stably and smoothly formed and fused accurately and are uniform in size. Meanwhile, by the method, the drop sizes are small, chaotic mixing and mass transfer velocities are high, and reactants are uniformly distributed in the channel to facilitate nucleation and growth of nano-particles. The microfluidic chip is made of a transparent PDMS material, the material formation can be monitored and regulation and control can be performed on line in real time through integration with a microscope, the chip is simple in design, a plurality of groups of parallel reaction channels can be easily constructed, high-throughout synthesis can be performed, and the product yield is improved.

Methods and systems for sequentially quantizing probability density functions for inkjet printing. In an example embodiment, an operation can be implemented to quantize probability density functions associated with larger drops among a plurality of drops provided by an inkjet printer. Non-quantized probability functions associated with remaining ink drops are then modified utilizing an error incurred at each quantization during quantization of the probability density functions associated with the larger drops. Quantizing the probability density functions and modifying the non-quantized probability functions continue until all drop size probability functions associated with the plurality of drops are quantized.

The invention discloses an adsorption decoloring method for vegetable oil. The method includes the steps of: firstly conducting micronization treatment on vegetable oil, then transferring the treated oil into a decoloring tank to conduct adsorption decoloring, and then carrying out filtering. The method provided by the invention combines the conventional adsorption decoloring method with micronization treatment, i.e. firstly conducts micronization treatment on vegetable oil and then carries out adsorption decoloring, not only can reduce the oil drop size of finished vegetable oil product obtained by further refining after decoloring, but also can further effectively improve the decoloring effect.

A method for modifying color density values in a dot-based printing system uses a control unit. The control unit implements the modification of the color density values after a raster image has been created and modifies the number and/or size of print dots to be applied to a printing substrate in order to attain pre-defined color density target values.

The invention provides a detecting chip used for dynamically detecting the interactive action of biomolecules. The detecting chip is mainly composed of a chip body and solidified filling materials. Gaps which are generated by patterning of a surface metal membrane layer on the chip body are filled with the solidified filling materials. A preparation method of the detecting chip mainly includes the following steps that A, a macromolecular material solution is prepared and fused with the chip body so that the macromolecular solution can seep into the gaps which are generated by patterning of the surface metal membrane layer on the chip body; B, the chip body after treatment in the step A is subjected to solidifying treatment so that the macromolecular material solution can be solidified into the solidified filling materials. The detecting chip guarantees the uniformity of chips, and also avoids that in the prior art, when matching fluid is dropwise added, due to the difference of dropwise-adding positions and methods, drop sizes and foams, detecting structures make errors.

A method for compensating tone value fluctuation in inkjet printing includes generating multi-bit halftone images of pixels on a computer during prepress screening for color separations with multiple tone values out of print image data, forwarding multi-bit halftone images to a control unit of an inkjet printing machine, and printing the multi-bit halftone on the machine, wherein encoded binary values of multi-bit halftone images correspond to ink drop sizes to be generated by the machine. The computer introduces additional binary values of multi-bit halftone images not corresponding to ink drop sizes in pixel positions of multi-bit halftone images where occurring tone value fluctuations are to be compensated for by modified ink drop sizes, causing additional binary values to be ignored by the machine in a regular print mode, and assigning additional binary values to modified ink drop sizes in a correction print mode.