1309results about "Enclosures/chambers" patented technology

A sample chamber is formed by a housing sealed against a microscope slide. The housing has fluid ports, including a well formed over at least one port. In a rinse station, rinse solution is drawn from a reservoir through the chamber to a waste reservoir. At a fill station, an aliquot of reagent already placed in the well is driven into the chamber. The reagent may be driven into the chamber by first drawing a vacuum on the chamber through the aliquot of reagent and then releasing the reagent to be drawn into the chamber by the vacuum.

This invention provides methods and systems for flushing, washing, and priming microscale devices for reuse. Washing and priming methods include flowing solutions from a manifold to flush wells and microchannels of a microfluidic chip. Systems include manifolds adapted to seal and flow solutions or gasses into chip wells. Devices include microfluidic devices with data storage modules to track the reprocessing status of the microscale devices.

A fume hood optical sash sensing system for controlling the flow of air into a fume hood to maintain a constant face velocity by utilizing an optical sensing device mounted inside the fume hood that can sense the movement of a sash based on repeatable reflexive tape to produce an output control signal that corresponds to sash movement to produce desired airflow into the fume hood. The system includes an optical sensing device with a light source, reflexive tape with a repetitive, quadrature encoded pattern, a smart controller device that receives output control signals from the optical sensing device, and an actuation device capable of receiving the output signal from the controlling device to control the damper device that will result in constant face velocity across the face of the sash.

The invention provides an incubator 1 wherein a microplate transport device 5 is disposed inside a chamber 11 centrally thereof. The transport device 5 comprises a transport table 50 for placing a microplate thereon and is capable of driving the table 50 along the directions of three axes, i.e., X-axis, Y-axis and Z-axis. A plurality of stackers 3 are arranged in the direction of Y-axis at each of opposite sides of the transport device 5 along the direction of X-axis. Each of the stackers 3 has a plurality of microplate accommodating portions arranged in the direction of Z-axis. The microplate is movable into or out of the desired accommodating portion by the transport device 5.

Apparatus and methods are disclosed for controlling flow of fluid inside a chamber. A device comprises a chamber comprising at least one wall, a first opening for introducing a fluid into the interior of the chamber, and a second opening opposite the first opening. The at least one wall of the chamber is designed to provide a contracting section, a section having substantially constant cross-sectional area and a diffusing section through the chamber from the first opening to the second opening. The device may be employed as a gas outlet in a reaction chamber for conducting reactions where it is desired to control the internal atmosphere of the reaction chamber. The apparatus may be employed in the manufacture of biopolymers on the surface of a support such as an array of biopolymer features on the support. Also disclosed is a holding element for a support wherein the holding element is a low drag body.

An object of the invention is to provide a multigas incubator capable of shortening humidity-returning time after closing its door. The incubator comprises an adiabatic box main body having an opening on a front face thereof, an adiabatic door mounted on the adiabatic box main body in an openable and closable manner, a transparent inner door for openably closing the opening, and an incubation room surrounded by the inner door and the adiabatic box main body for incubating samples such as cells, microbes and the like. The adiabatic box main body comprises an outer box made of a metal, an inner box made of a metal, a heat insulating material arranged inside the outer box between the outer and inner boxes, and an air layer arranged more inside than the heat insulating material. Gases supplied for controlling concentrations of gases in the incubation room are jetted into humidification water.

The invention provides a control system of a laboratory variable air volume (VAV) fume hood. The control system is characterized by comprising a fume hood, a Venturi valve arranged on an air exhaust branch pipe of the fume hood, a displacement sensor, a door height warning switch, a face velocity monitoring and control system, a fan variable frequency system, a valve controller and a valve actuator, wherein, the face velocity monitoring and control system comprises a face velocity sensor and a VAV controller; the VAV controller measures the open degree of the fume hood in real time, and meanwhile the face velocity sensor measures the face velocity in real time, converts the face velocity into a voltage signal and then transfers the voltage signal to the VAV controller; the VAV controller compares the actual value with the set value of the face velocity; and if the face velocity is not within the range of the set value, the VAV controller outputs a signal to the valve controller, the valve controller outputs a signal to the valve actuator, and the valve actuator drives a piston of the Venturi valve to move up and down so as to change the ventilation sectional area and adjust the ventilation volume.

An environment analogue means for surface freezing of airplanes on ground. The means comprised an experiment case and a suspension positioning device installed inside or outside of the experiment case, an air cycling device, a spray system, an ice clearing liquid spray system, an illumination system, a refrigeration system, a data acquisition system and a control system. The invention provided environment analogue means for surface freezing of airplanes on ground can simulate freezing weather condition of natural environment in truth, Observing processes of ice increasing, ice melting and iceclearing liquid spraying on airplane surface, Thereby rules of icing on airplane surface in different weather condition can be obtained, Which can provide experiment basis for research of airplane surface icing and airplane surface ice proofing / deicing, Finally improving security and high effectiveness of airplane operation in icing weather condition.

This invention discloses novel improvements to conventional microtiter plates, involving integrating microfluidic channels with such microtiter plates to simplify the assay operation, Increase operational speed and reduce reagent consumption. The present invention can be used in place of a conventional microliter plate and can be easily substituted without any changes to the existing instrumentation systems designed for microtiter plates. The invention also discloses a microfluidic device integrated with sample loading wells wherein the entire flow process is capillary driven.

The present invention relates to a model test device, and specifically to a frozen soil mechanics model test device. The invention is characterized in that the frozen soil mechanics model test device has a full-steel box type structure which comprises a heat insulation box body, a baseboard temperature controller, a water supplying device, a loading device and a data collecting and processing device. The device adopts a welding mode for connecting to a whole, and only one side plate adopts bolt connection, wherein, the baseboard structure of heat insulation box body comprises a heat insulationbaseboard, a water supplying pool and a top plate of water supplying pool. The structure gives attention to the functions of water supplying and temperature control. The water supplying device comprises a water level controller, the water supplying pool and a water supplying pipeline device. The charging device comprises a hydraulic jack and a hydraulic oil pump. The data collecting and processing device comprises a DT500 / 600 series data collector, a XSL series temperature measuring instrument and various types of sensors. The device of the invention has the advantages of realizing unidirectional and bidirectional freezing condition, realizing the water supplying of water migration in freezing process, providing the load of model test load application damage, monitoring the temperature field and stress field of frozen soil, monitoring the frost heaving, subgrade settlement deformation, etc.; and realizing the automatic collection and analysis of test data in the test process.

The invention discloses a laboratory ventilated cabinet which comprises a cabinet body, a window door, a central control unit and an infra-red detector, wherein the window door is arranged on the front face of the cabinet body, the central control unit is arranged on the cabinet body, the infra-red detector is arranged on a frame of the window door positioned on the front surface of the cabinet body, electrical signals of the infra-red detector are connected to the central control unit, electrical signals output by the central control unit control a drive mechanism of the window door, the infra-red detector detects infra-red input signals, so that the window door can automatically start when persons approach and automatically close when persons leave. The invention has high intellectualization and is convenient to operation and suitable for various laboratory ventilated cabinets.

A movable laboratory with high biological safety is composed of primary experiment cabin, person cleaning and technological supporting cabin including clothes exchanging room, buffering room and substance transfer window between them, air-tight flexible connection channel between said both cabins, and the connected water and air pipelines, cables and signal lines.

A chamber, system, and method for separating a selected component from a fluid are provided. The chamber is capable of rotating about the central axis of a centrifuge device and includes a radially-extending duct having an optimized variable cross-sectional area that decreases in relation to the outward radial distance from the central axis of the centrifuge. The optimized geometrical design of the duct provides that a centrifugal force exerted on the selected component caused by the rotation of the chamber substantially balances the drag force exerted on the selected component by the fluid as the selected component flows through the duct. Thus, the duct allows the selected component to be dispersed in equilibrium along the radial length of the duct such that the selected component may be effectively suspended with the duct and / or separated from the fluid using elutriation or other methods.

The biological transport and storage device includes a cooling chamber containing one or more biological samples in a sample holder surrounded by coolant air which is intermittently circulated through the cooling chamber across a thermoelectric unit that can cool or heat the circulating air. A fan is used to circulate air through the cooling chamber, and a separate fan may be used to introduce and circulate ambient air over the thermoelectric unit in incoming air chamber. A sample rotator motor may be used to rotate the samples within the cooling chamber. A control system includes a PLC controller that receives temperature inputs from the sample holder, ambient air within the cooling chamber, and the thermoelectric unit, as well as possibly within the sample. The PLC receives these temperature inputs, and controls the fans, sample rotator motor, and thermoelectric units such that the temperature of the samples within the cooling chamber are cooled at a predetermined and selectable temperature profile. This profile may be selected through the PLC interface based upon a number of factors, such as the type of sample (equine semen, bovine semen, embryo, cardiac tissues, etc.) the expected period for transport or delay until use, for example.

The invention discloses an environmental test chamber for monitoring purification effect of air purifying products, which comprises a sealed box body, a sample introducing / sampling system, a temperature / humidity control system, a light source control system, an air channel internal circulation and air flow rate control system, an air exchange system and a control panel; in the environmental test chamber of the invention. an environment compounding cavity, independent of the external environment, is formed by the sealed box body, and environmental parameters in the environmental test chamber can be regulated and controlled by the sample introducing / sampling system, the temperature / humidity control system, the light source control system, the air channel internal circulation and air flow rate control system and the air exchange system so as to simulate different environmental conditions. The environmental test chamber of the invention has the advantages of providing a test environment with good stability and uniformity and comprehensively simulating the actual working environment of air purification, so that the environmental test chamber can be used for monitoring the purification effect of air purifying products and is also applicable for monitoring the purification effect of nanometer purifying products based on photocatalysis.

The invention discloses a multifunctional environmental test box, which comprises a first heating box internally provided with an electric heating element used for heating air, a second heating box and a test box. The second heating box is connected with the first heating box through a blocking device capable of achieving air communication or closing functions, an electric heating element and a fan are arranged in the second heating box to heat the air and generate hot air. The test box is communicated with the second heating box through an air channel capable of achieving opening and closing functions, and a fan and a liquid nitrogen distributor are arranged in the test box. The environmental test box is capable of achieving quick heating and quick cooling through the liquid nitrogen cooling mode due to the fact that a heating system of the environmental test box adopts the two heating boxes and a plurality of electric heating elements. The environmental test box is capable of achieving functions of different environment tests such as temperature impact tests, high low temperature quick temperature change tests and high low temperature circulation tests, correspondingly improves convenience for operators and reduces equipment purchase cost.

The invention discloses an environmental humidity control method for a sealed cavity. A drying gas branch circuit and a wetting gas branch circuit are supplied, wherein the drying gas branch circuit is connected with a three-way gas joint after being dried and regulated and controlled by a gas flowmeter; the wetting gas branch circuit is connected with the three-way gas joint after being wetted and regulated and controlled by the flowmeter; the drying gas and the wetting gas are converged into one path at the three-way gas joint to enter an environmental gas chamber of the sealed cavity; and the humidity control in the environmental gas chamber of the sealed cavity is adjusted by the charged flow proportion of the drying flowmeter gas and the wetting flowmeter gas. A device mainly comprises a drying gas source (12), a drying device (14), a drying gas flowmeter (16), a wetting gas source (10), a water tank (8), a wetting gas flowmeter (16), the three-way gas joint (4) and the environmental gas chamber (2) of the sealed cavity. The invention has simple, economic and practical control way, large regulating and control humidity range, simple equipment structure, convenient use, environmental protection and no pollution and can meet the use requirement of special atmosphere humidity in the sealed cavity.

A device used for simulating space composite environment near ground orbit is prepared for carrying out vacuum preair-out of vacuum chamber by vacuuming, leading oxygen in, utilizing magnetic field and microwave to couple with oxygen for generating oxygen plasma by electric-discharging, impacting target being exerted with negative bias voltage by oxygen plasma under magnetic field constraint to convert oxygen plasma to be neutral oxygen atom for generating space composite environment near ground orbit at sample table.

The invention discloses an anti-dumping transport box for medical drugs, which includes a box body. The box body is provided with a cavity. The cavity is provided with a clamping mechanism. The clamping mechanism passes through a sealing plate and a packaging box. Five test tubes can be clamped, the medicine is stored in the storage chamber in the test tube, and the sealing piston in the clamping mechanism can seal the storage chamber. The present invention can hold the test tube vertically and pass The sealed piston is sealed to prevent leakage of the drug, and to keep the drug in an environment filled with inert gas, to prevent gas with more impurities such as air from entering the test tube and contaminating the drug, and to reduce the upper and lower test tubes during transportation. The amplitude of the vibration and the angle of inclination can prevent the tube from leaking the drug due to the large inclination.

Disclosed herein is a single use, controlled environment manufacturing module in the form of a sterile sealed bag formed of a substantially flexible material, such that the bag can be inflated and deflated for transport and / or disposal. The flexible bag has one or more access ports and connectors to accommodate a variety of biochemical or pharmaceutical manufacturing processes to be carried out within the flexible bag. The interiors of one or more disclosed modules can be connected, forming a module train.

A reagent cabinet for an automated processing apparatus. The reagent cabinet has a housing, and a drawer slidably mounted in the housing. The drawer has a lower deck adapted to receive a fluid reservoir, and an upper deck located above the lower deck and adapted to receive a fluid supply container. A supply connection hose is provided to selectively connect the fluid supply container to the fluid reservoir. A reservoir connection hose is provided to selectively connect to the fluid reservoir and to convey fluid from the fluid reservoir to a downstream location outside the cabinet. A pump is mounted on the drawer. The pump is adapted to convey fluid through either the supply connection hose or the reservoir connection hose.

The invention relates to a multifunctional environment simulation test chamber for an on-line detecting textile material total organic volatile, comprising a main chamber body, an ultraviolet lamp, an ultrasonic humidifier, a VOC (Volatile Organic Compounds) sensor, an electric heater, a refrigerating compressor and a circulating fan. The main chamber body is provided with a sample injecting switch at the top end, an airtight door at the front surface, a cleaning drainage valve and an exhaust sampling electromagnetic valve at the bottom and the ultraviolet lamp inside; the ultrasonic humidifier is arranged on one side of the airtight door, the VOC sensor is arranged on the side surface of the main chamber body, the electric heater is connected with the main chamber body by a circulating air pipe, the refrigerating compressor is arranged on the lower part of the main chamber body, and the circulating fan is arranged below the electric heater. The invention has good stability and low cost, is easy to maintain, can detect the air for a long time, and is a fabric photocatalytic activity on-line VOC detection system comprising a special sensor, a basic evaluator, a data program, an on-line detection meter and the like by utilizing an on-line detection method.

The invention discloses a plastic syringe recycling and processing device. The device includes a working box and a working cavity located in the working box; a feeding port runs through the upper endwall of the working box; a first rotating shaft located on the lower side of the feeding port is rotatably arranged on the front and back cavity walls of the working cavity; the first rotating shaft is fixedly provided with a first squeezing barrel; a second rotating shaft located on the right side of the first rotating shaft is rotatably arranged on the front and back cavity walls of the workingcavity; and the second rotating shaft is fixedly provided with a second squeezing barrel. The device can recycle used plastic syringes; through a squeezing device, air and water left in the used syringes can be squeezed, the plastic syringes can be compressed, so that the volumes of the syringes can be decreased; the syringes can be broken through a breaking device, heating and melting can be carried out on the broken syringes, sterilization and disinfection on metal needles can be achieved during heating; and after heating and melting, melted plastic liquid can be separated from the metal needles, so that classification and recycling on the syringes can be accomplished.

A closure for a container includes: (a) an inner cylindrical wall having first and second ends and defining a space; (b) an outer cylindrical wall opposite the inner cylindrical wall and having said first and second ends to form an outer surface of the closure; (c) a first end wall extending across said first end, wherein said first end wall comprises a recess extending a least partially into said space, and a first set of threads disposed on said recess. In a preferred embodiment, a second set of threads is disposed on said inner or outer cylindrical wall having a direction which is opposite that of the first set of threads. A combination container and a closure includes the closure as described above and a container having an opening at one end adapted to receive the closure. An apparatus removes and installs a closure on the container and includes: a threaded rotatable spindle adapted for threading into a closure having a threaded depression and for applying a rotational force to remove the closure; and a clutch having an element adapted to engage the closure and apply a rotational to the closure. The apparatus can be used on an analyzer, such as a diagnostic analyzer.

The present invention provides an improved bio-safety cabinet having a microprocessor control system for the monitoring and control of the inflow, downflow and outflow of air, for creation of a performance envelope within the work chamber wherein all contaminated areas are under negative pressure or surrounded by negative pressure and the work chamber is continuously bathed in clean air, ensuring the microbiological work is protected form contamination in normal room air. Improved decontamination and other safety measures for a bio-safety cabinet are also proposed.

A sustainable system for removing and concentrating per- and polyfluoroallcyl substances (PFAS) from water. The system includes an anion exchange vessel having a selected anion exchange resin therein configured to remove PFAS from the water. A line coupled to the vessel introduces a flow of water contaminated with PFAS such that the PFAS bind to the selected anion exchange resin and are thereby removed from the water. A regenerant solution line is coupled to the anion exchange vessel to introduce an optimized regenerant solution to the anion exchange vessel to remove the PFAS from the anion exchange resin, thereby regenerating the anion exchange resin and generating a spent regenerant solution comprised of the removed PFAS and the optimized regenerant solution. A separation and recovery subsystem recovers the optimized regenerant solution for reuse and separates and concentrates the removed PFAS.

A method and system for controlled rate freezing and nucleation of biological materials is provided. The presently disclosed system and method provides the ability to rapidly cool the materials contained in vials or other containers within a cooling unit via forced convective cooling and optionally simultaneous pressure drop using uniform and unidirectional flow of cryogen in proximity to the plurality of vials disposed within a cooling unit. The rapid cooling of the biological materials is achieved by precisely controlling and adjusting the temperature of the cryogen being introduced to the system as well as the chamber pressure as a function of time.

The invention discloses a high-and-low-temperature environmental testing refrigerating system, a high-and-low-temperature environmental testing box and a control method. The high-and-low-temperature environmental testing refrigerating system comprises a low-temperature-level compressor, an evaporator, an adjusting valve, a condensation evaporator, a high-temperature-level compressor, a condenser and a controller for controlling the opening and closing states of the adjusting valve. The low-temperature compressor, the evaporator, the adjusting valve and the condensation evaporator are connected in series through pipelines to form a low-temperature loop, the high-temperature compressor, the condenser and the condensation evaporator are connected in series through pipelines to form a high-temperature loop, and the low-temperature loop is connected with the high-temperature loop in parallel. The invention further discloses the high-and-low-temperature environmental testing box and the control method of the high-and-low-temperature environmental testing box. Cold quantity generated by the high-and-low-temperature environmental testing refrigerating system is used sufficiently, waste of energy can not be caused, energy consumption is reduced, and therefore energy is saved.

A sample processing apparatus is for extracting a nucleic acid from a sample and amplifying the nucleic acid, wherein the sample processing apparatus including a housing including a chamber; a valve positioned below the housing; and a polymerase chain reaction (PCR) portion positioned below the valve, wherein the polymerase chain reaction portion performing a polymerase chain reaction.