A rotor for a continuous centrifugal separator includes a core body in a substantially cylindrical shape, fins, and a rotor body in a tubular shape. The core body is formed with fin mounting grooves continuous in an axial direction on an outer circumferential surface. The fins are mounted to protrude to a radially outer side from an outer circumferential surface of the core body. As the fin to be mounted, multiple types of fins that have different circumferential widths of a portion protruding to the radially outer side from the outer circumferential surface of the core body are prepared. A volume of centrifugal separation spaces is changeable by an operator selecting any one of the multiple types of fins and mounting the fins to the core body.
B04B 1/02 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls
B04B 11/02 - Continuous feeding or dischargingControl arrangements therefor
A display screen 100 of an operation panel displays: a function (130) that gives notification of the performance of a periodic inspection of a cooling system; and an operation button 131 for starting inspection of the cooling system. During an easy inspection, a compressor 9a of the cooling system 9 is activated when a rotor 5 is not installed, it is determined whether the temperature detected by a temperature sensor 12 falls to a prescribed temperature (e.g., −3° C.) within a prescribed period of time (e.g., within 10 minutes) from activation, and the cooling system is determined to be normal if the detected temperature falls to the prescribed temperature and abnormal if not. The results of the determination are stored at a storage unit of the centrifuge, the timing 132 of the next inspection is displayed on the display screen 100, and it is possible to reference a past inspection history.
This centrifuge is configured to be capable of detecting, with high accuracy, the rotational speed of a rotor even in a low-speed range. In the centrifuge which employs a rotation detector for generating m-number (where m≥1) of pulse signals per rotation of a motor, a control unit compares a time interval T (n-1, m) of pulse signals in one rotation prior to the immediately preceding pulses detected by a rotation detector with a time interval T (n, m) of recent detection pulse signals, and then, from an increase or decrease between the time interval T (n-1, m) and the time interval T (n, m), calculates the rotational speed by using a formula of rotation speed N (n, m)=N (n-1, m)×T (n-1, m)/T (n, m).
In this automatic centrifuge, the load on each bucket is equalized by changing, for each centrifuge operation, the first installation bucket position of a rack that is conveyed automatically. In the automatic centrifuge having a handling device that automatically attaches and removes a rack equipped with a sample container to and from a bucket, a control device changes the first bucket on which a rack is installed according to whether the centrifuge operation is an odd-th time or an even-th time. In an odd-th time centrifuge operation, the installation of the rack is started at a circle 1 of a bucket A. In an even-th time centrifuge operation, the installation of the rack is started at a circle 3 of a bucket B. In this manner, load concentration on a specific bucket (A, C) is prevented, which extends the life of the buckets.
A centrifuge includes a bucket and a swing rotor. The swing rotor includes a through hole penetrating from an upper to a lower side in an axial direction of the swing rotor and a notch formed in a direction perpendicular to a central axis of the through hole and formed on a radial outer side of the swing rotor. The bucket includes a container. A flange having a seating surface seated in the notch during swinging is formed near the opening of the container, chamfering is performed in parallel on opposing outer surfaces of the container on a bottom side of the container with respect to the seating surface, a cross-section shape of the holding hole inside the container is formed to be elliptical, and a short axis direction of the cross section is arranged parallel to a swing rotation axis direction.
The present invention provides a sample container in which an outer lid and neck support portion used for sample containers having a substantially triangular cross-section are integrally formed and which is easy to transport, and a centrifuge using the sample container. An outer lid 70 has a non-circular outer edge shape such that when the outer lid 70 is properly attached to a container 41, the outer edge shapes of the outer lid 70 and the container 41 are in the same position as viewed from the central axis direction. When the sample container 40 is mounted in the holding hole of a rotor, an outer peripheral surface 71 of the outer lid 70 abuts on the inner wall of the holding hole, so that the outer lid 70 can support the centrifugal load applied to the outer lid 70 during centrifugal operation. In addition, a retractable handle 68 is provided on an inner lid 61, and even when the outer lid 70 is closed, the handle 68 can be unfolded through a through-hole 76; this allows an operator to grip the handle 68 and hold the sample container 40.
Provided is a continuous centrifugation machine that facilitates gradual switching of the capacity of centrifugation spaces, by the size of attached fins. A rotor for the continuous centrifugation machine comprises: a substantially cylindrical core main body 31 having a groove 37 for the attachment of a plurality of fins, that continues in the axial direction on the outer peripheral surface; a plurality of fins 40 that are attached so as to protrude to the outside in the radial direction, from the outer peripheral surface of the core main body 31; and a cylindrical rotor body 11. A plurality of attached fins (40, 50) are provided that have sections, protruding further to the outside in the radial direction than the outer peripheral surface of the core main body, that have differing widths in the circumferential direction. The present invention is configured such that the capacity of the centrifugation spaces S1–S6 can be changed by an operator selecting one of the plurality of fins 40,50 and attaching the selected fin to the core main body 31.
B04B 1/02 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls
The present invention includes: a cell holding body that holds a measurement cell housing a measurement sample and a dispersion medium; a cover attached to the cell holding body so as to cover the measurement cell; a rotation section that rotates the cell holding body and applies centrifugal force to the measurement cell; a light source that is provided on one side of a rotation passage region of the measurement cell and irradiates the cell with light; a photodetector that is provided on another side of the rotation passage region of the measurement cell and detects light transmitted through the cell; and a particle diameter distribution arithmetic section that acquires a light intensity signal from the photodetector and calculates a particle diameter distribution. The rotation passage region of the cover is located inside an optical path of light passing between the light source and the photodetector.
Provided is a centrifuge that is provided with a function that gives notification of the timing of periodic inspections of a cooling system and also has a function that makes it possible to perform a periodic inspection by means of a simple operation. A display screen 100 of an operation panel displays: a function (130) that gives notification of the performance of a periodic inspection of a cooling system; and an operation button 131 for starting inspection of the cooling system. During an easy inspection, a compressor 9a of the cooling system 9 is activated when a rotor 5 is not installed, it is determined whether the temperature detected by a temperature sensor 12 falls to a prescribed temperature (e.g., -3°C) within a prescribed period of time (e.g., within 10 minutes) from activation, and the cooling system is determined to be normal if the detected temperature falls to the prescribed temperature and abnormal if not. The results of the determination are stored at a storage unit of the centrifuge, the timing 132 of the next inspection is displayed on the display screen 100, and it is possible to reference a past inspection history.
In a cell washing centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art greatly depends on controlling the rotation speed of a motor, and thus a highly accurate motor control part is required to prevent overshooting or the like. In place of the related art, an easy control method is required. In the discharging of a supernatant discharge by a centrifuge having a plurality of test tube holders that can radially swing through centrifugal force, a holding part using an electromagnet that can control the swinging of the test tube holders, and a cleaning liquid distribution element that supplies a cleaning liquid into a test tube, a first decanting operation ({circle around (3)}-1) is performed by rotating a rotor in the order of acceleration, settling, and deceleration in a state in which the agitating angle of the test tube is restricted and discharging the supernatant of the cleaning liquid from the test tube, and a second decanting operation ({circle around (3)}-2) is performed, at a time of a final decanting operation, by accelerating the rotor, releasing restriction on the agitating angle during the acceleration, and then decelerating the rotor.
When this centrifuge is operated, local stress applied to a liquid-feeding groove formed in the upper surface of a rotor core is averaged to minimize deformation of the rotor core. A rotor core, which is mounted inside a rotor used for continuous centrifugation, has a columnar solid section, blades expanding radially outward from the solid section, and a disc section extending radially outward from the upper surface of the solid section, the upper surface of the rotor core being provided with a liquid-feeding grove that continues radially outward from the center vicinity to the outer side. A stress-mitigating groove that extends radially outward is formed in the lower surface of the liquid-feeding grove. The stress-mitigating groove is formed in a position overlapping the position of the liquid-feeding grove when the disc section is viewed along the axial direction.
B04B 5/12 - Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
B04B 1/04 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
Provided is a centrifuge that allows a user to easily determine whether running is normally completed or the running is not started. In the centrifuge having a setting screen 70A on which input of centrifugal running conditions and a centrifugal running state can be displayed, a control device performs centrifugal separation running of a rotor according to a set running time, a set rotation speed, and a set temperature. When the centrifugal separation running is completed and the rotor is stopped, the control device arranges an elapsed time display column 71 in a setting screen 70A, counts the time since the motor is stopped, and displays an elapsed time 73 after the centrifugal separation running is completed.
This invention reduces variation in amounts of cleaning liquid fed into a plurality of test tubes in a cleaning liquid introduction step for a centrifuge for cleaning blood cells or other living cells. A cleaning liquid distribution element (50) attached to an upper portion of a rotor body (31) comprises an upper distribution element (51) and lower distribution element (61) and is fed cleaning liquid from a cleaning liquid introduction opening (54) during the rotation of a rotor (30). The cleaning liquid enters into a recessed inside part of the lower distribution element (61). The cleaning liquid that has entered the inside part is moved radially outward by centrifugal force from the vicinity of the center of rotation so as to climb an inclined part (64). A plurality of cleaning liquid passages (67) are radially formed at a lower annular part at the distal end of the inclined part (64), and the cleaning liquid is discharged radially outward from discharge openings (67b) in the cleaning liquid passages (67). The formation of the inclined part (64) makes it possible to evenly distribute the cleaning liquid into test tubes (80).
A particle size distribution measurement device includes a cell holding body 31 that holds a measurement cell 2 containing a measurement sample and a dispersion medium and a reference cell 6 containing a reference sample and is rotated by a motor 322, and a cell discrimination mechanism 7 that discriminates the cells 2, 6 passing through a predetermined rotation position by using a magnetic force or electrostatic capacitance.
A valve bridge portion, in which four valves A to D are connected in a bridge shape, is interposed between sample lines to a rotor of a continuous centrifuge. A microcomputer is able to open and close the valves A to D independently and is capable of switching between top feed and bottom feed to the sample line. When sample supply is started, switching between the top feed and the bottom feed is performed multiple times, and in the middle of switching and sending a sample liquid, the microcomputer executes an operation of temporarily increasing a liquid pressure multiple times by temporarily closing an outlet valve (C or D) and then immediately opening the valve. As a result of repeating the operation of switching between the said sample feed directions and temporarily increasing the liquid pressure, air that accumulates inside the rotor can be effectively discharged.
The present invention facilitates mounting work of a cover body on a cell holding body during cell exchange, etc. The present invention comprises: a cell holding body (31) for holding a measurement cell (2) in which a measurement sample and a dispersion medium are accommodated; a cover body (33) mounted on the cell holding body (31) so as to cover the measurement cell (2); a rotation part (32) which rotates the cell holding body (31) and exerts a centrifugal force on the measurement cell (2); a light source (41) which is provided on one side of the measurement cell (2) sandwiching a rotation passing area, and which irradiates the cell (2) with light; a photodetector (51) which is provided on the other side of the measurement cell (2) sandwiching the rotation passing area, and which detects light that has passed through the cell (2); and a particle diameter distribution computation unit (11) which acquires a light intensity signal from the photodetector (51) and calculates a particle diameter distribution, wherein the rotation passing area of the cover body (33) is disposed inside the optical path of light passing between the light source (41) and the photodetector (51).
In a continuous centrifuge, a core end surface component separated from a core body is arranged inside a rotor, an air trap mechanism which automatically captures bubbles inside a sample is formed, and the bubbles are removed by centrifugal separation before the sample is sent to an outer circumferential portion having a high liquid pressure. In addition, when viewed in the axial direction, the core body and an upper rotor cover abut each other, and the core end surface component and a lower rotor cover abut each other, with appropriate pressure by biasing the core end surface component and the core body with a spring. Because a flow path between the rotor core and the rotor covers is maintained in a perfect state and the bubbles in liquid are also removed, the flow path may not be blocked by the bubbles and the centrifugal separation can be stably performed.
B04B 1/02 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls
B04B 11/02 - Continuous feeding or dischargingControl arrangements therefor
Provided is a centrifuge with which a user can easily determine if operation has ended normally, or if operation has not started. In this centrifuge, which includes a setting screen 70A capable of displaying inputs of centrifuge operating conditions and the centrifuge operating state, a control device performs a centrifugal separation operation of a rotor in accordance with a set operating time, a set operating time, and a set temperature. When the centrifugal separation operation has ended and the rotor has stopped, the control device provides an elapsed time display field 71 in the setting screen 70A, counts the time from when the motor stopped, and displays the elapsed time 73 since the centrifugal separation operation ended.
When this centrifuge is operated, local stress applied to a liquid-feeding groove formed in the upper surface of a rotor core is averaged to minimize deformation of the rotor core. A rotor core 40, which is mounted inside a rotor used for continuous centrifugation, has a columnar solid section 41, blades 58 expanding radially outward from the solid section 41, and a disc section 44 extending radially outward from the upper surface of the solid section 41, the upper surface of the rotor core 41 being provided with a liquid-feeding grove 52 that continues radially outward from the center vicinity to the outer side. A stress-mitigating groove 57 that extends radially outward is formed in the lower surface of the liquid-feeding grove 52. The stress-mitigating groove 57 is formed in a position overlapping the position of the liquid-feeding grove 52 when the disc section 44 is viewed along the axial direction.
Provided is a centrifuge capable of improving user operability. The centrifuge has a rotor chamber and a door for opening and closing the rotor chamber, wherein the centrifuge includes a presence and absence detection part for detecting presence or absence of a rotor, a door locking mechanism capable of switching between a locked state for inhibiting opening of the door and an unlocked state for allowing opening of the door, and a first control part configured to perform an operation of setting the door locking mechanism to be the unlocked state when the rotor is accommodated in the rotor chamber and configured to set the door locking mechanism to be the unlocked state when an unlocking passcode is input.
In a centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art largely depends on controlling the rotational speed of a motor, and thus a highly accurate motor control means is required to prevent overshooting. In place of the related art, an easy control method is required. In the discharging of a supernatant discharge by a centrifuge having a plurality of test tube holders that can radially swing through centrifugal force, a holding means using an electromagnet that can control the swinging of the test tube holders, and a cleaning liquid distribution element that supplies a cleaning liquid into a test tube, a first decant operation (round 3-1) is executed by rotating a rotor in the order of acceleration, setting, and deceleration in a state in which the swinging angle of the test tube is limited and discharging the supernatant of the cleaning liquid from the test tube, and a second decant operation (round 3-2) is executed, at a time of a final decant operation, by accelerating the rotor, releasing limitations on the swinging angle during the acceleration, and then decelerating the rotor.
3) of the outer surface of the quarter spherical parts are equal. A flange part (43) that expands radially outward is formed on the opening (44) of the body part (41).
The purpose of the present invention is to provide a small rotor for a centrifuge, the rotor being configured such that numerous sample containers can be mounted simultaneously and it is easy to take out the sample containers. In an inner peripheral surface 20A of an outer wall part 20, recessed areas 20B locally carved outward are provided in areas between sample container insertion holes 11 that are adjacent to each other in a circumferential direction. In the locations of the recessed areas 20B, the spaces between adjacent sample containers 51 are wider, and the sample containers 51 can easily be taken out.
Provided is a centrifuge. In a centrifuge having a rotor with a rotor body that holds a sample and that is rapidly rotated, an inclined surface that extends upward as it extends radially outward is formed on an upper-side outer peripheral portion of the rotor, in a region that is at a radially outward side and at an upper side of the outer edge of an opening. The inclined surface is a continuous ring-like inclined surface that has the same cross-sectional shape in the circumferential direction and is formed into a straight-line shape or a curved-line shape in cross-section along a rotation central axis. Although winds occur during high-speed rotation of the rotor, the winds are rectified by the inclined surface, and a component force for pressing the rotor body in a downward direction acts thereon.
A centrifuge including a lid section of a sample container, the lid section having a rotating shaft for swinging, and a swing-type rotor, and the centrifuge conducts centrifugation operation in a state where the sample container is seated in a bucket housing section by making the sample container in which the rotating shaft is mounted to a rotating shaft engagement groove of the rotor swing due to the rotation of the rotor. The rotating shaft comprises a plurality of members connected by a connection section and is configured so as to be bendable at the connection section by a centrifugal load accompanying the rotation of the rotor.
A centrifuge and a rotor thereof are provided. The centrifuge performs centrifugation in a state where the sample container is swung by rotation and seated in a cutout part of a rotor body. The sample container includes a bucket accommodating a container filled with a sample, and a lid for sealing the bucket and having a rotation shaft. Grooves extending in the longitudinal direction are formed on the outer peripheral surface of the bucket on the bottom side with respect to a seating surface of the bucket. The grooves are arranged at equal intervals in the circumferential direction. Formation of the grooves can prevent increasing the weight of the bucket and realize a highly rigid sample container that can withstand deformation.
Provided is a swing rotor for a centrifuge. The centrifuge includes a swing type rotor body having a plurality of holding pins and a plurality of buckets held by the holding pins in a swingable manner. On the rotor body, a connection part is formed to connect two branch arms that diverge from an arm part on an outer peripheral side. A thickness-reduced part penetrating in the same direction as a driving shaft is formed in a region surrounded by the two branch arms on an inner peripheral side of the connection part. Since the branch arms deform accordingly to a certain extent, partial concentration of the stress applied on the holding pins due to a centrifugal load can be alleviated. Thus, the lifespan of the centrifuge can be improved and the centrifugal separation operation can be stabilized.
A centrifuge including a rotor, a rotor chamber accommodating therein the rotor and having an opening, a motor configured to rotate the rotor, a door configured to close the opening of the rotor chamber, an input unit configured to receive an input of an operation condition, a display unit configured to display an operating status, and a control unit configured to control rotation of the motor, wherein the control unit is configured to perform a program operation under an operation condition including a plurality of steps, and wherein the control unit is configured so that a specific step of stopping the rotation of the rotor and permitting the door to be opened or closed can be set as at least one of the plurality of steps.
A centrifuge including a rotor, a rotor chamber having an opening, a motor, a door configured to close the opening, an input/output unit configured to receive an input of an operating condition and to display an operating status, and a housing accommodating therein the rotor, the rotor chamber, the motor, the door and the input/output unit, wherein the housing has the opening at an upper surface thereof, wherein a light emitting part having a horizontal width longer than the opening is provided in the vicinity of a corner portion at which the upper surface and a front surface of the housing intersect with each other or in the vicinity of a front side of the opening, and wherein a light emitting form of the light emitting part is configured to be changed depending on the operating status.
Lowering of process quality of a sample is prevented even when a rotor is slowly decelerated taking a long time upon finishing a centrifugal process. A centrifuge having a steady operation mode of rotating a rotor at an inputted steady rotation speed and a deceleration stop mode of stopping the rotor by deceleration. When a remaining time of the steady operation mode is within a stop preparation time, a target controlled temperature of the rotor chamber is set from a first target controlled temperature to a second target controlled temperature that is higher than the first target controlled temperature. By setting the target controlled temperature of the rotor chamber high before switching to the deceleration stop mode, temperature of the rotor chamber is controlled to be close to a set temperature of the rotor and thus excessive cooling of a sample loaded to the rotor can be prevented.
A centrifuge includes a rotor which accommodates a sample, a motor which rotationally drives the rotor and a chiller which cools a rotor chamber, and is provided with a transformer which has a plurality of secondary side taps, converts an AC voltage which is input from a primary side to a plurality of voltages, and outputs, and a voltage switching unit which is connected to the plurality of secondary side taps of the transformer, selects any one of outputs of the secondary side taps, and outputs to the chiller. The microcomputer controls the voltage switching unit corresponding to the power supply frequency which is determined using the output of the zero-crossing detection circuit, and supplies the desired driving voltage to the chiller.
B04B 13/00 - Control arrangements specially designed for centrifugesProgramme control of centrifuges
B04B 15/02 - Other accessories for centrifuges for cooling, heating, or heat insulating
H02M 1/10 - Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
Goods & Services
(1) Centrifuges, namely, centrifuge separators for use in biology and life-science fields, for use in separation of micro-colloids and nano-colloids, for use in measuring adhesive power, and for use in removal of micro-bubbles; rotors for centrifuge separators for use in biology and life-science fields, for use in separation of micro-colloids and nano-colloids, for use in measuring adhesive power, and for use in removal of micro-bubbles; tubes for centrifuge separators for use in biology and life-science fields, for use in separation of micro-colloids and nano-colloids, for use in measuring adhesive power, and for use in removal of micro-bubbles; peripherals for centrifuge separators for use in biology and life-science fields, for use in separation of micro-colloids and nano-colloids, for use in measuring adhesive power, and for use in removal of micro-bubbles; parts and accessories for centrifuge separators for use in biology and life-science fields, for use in separation of micro-colloids and nano-colloids, for use in measuring adhesive power, and for use in removal of micro-bubbles
(2) Centrifuges, namely, centrifuge separators for laboratory and clinical use in separators for use in biology and life-science fields; rotors for centrifuge separators for laboratory and clinical use in separators for use in biology and life-science fields; tubes for centrifuge separators for laboratory and clinical use in separators for use in biology and life-science fields; peripherals for centrifuge separators for laboratory and clinical use in separators for use in biology and life-science fields; parts and accessories for centrifuge separators for laboratory and clinical use in separators for use in biology and life-science fields
09 - Scientific and electric apparatus and instruments
Goods & Services
Centrifuges; centrifuge machines; rotors for centrifuge; tubes for centrifuge; parts and fittings for centrifuge Centrifuges for laboratory and clinical use; rotors for centrifuge for laboratory and clinical use; tubes for centrifuge for laboratory and clinical use; parts and fittings for centrifuge for laboratory and clinical use; laboratory apparatus and instruments, namely, protein sample fractionators, hybrid fractionators, dielectric collection tube sealers, instrument for slicing centrifuge sample tubes and collecting resulting lipoproteins, gradient maker, density gradient preparation unit for zonal centrifugation and unloading of gradients after fractionation, laboratory equipment for use in the field of medical diagnostics, namely, automation equipment to automate the decapping and sorting of laboratory samples and tubes, online sample storage, sample transport, centrifugation, sample resealing and desealing, and aliquoting
A centrifuge including: a rotor configured to hold a sample and configured to be detachably mounted, a rotation chamber accommodating the rotor, a plurality of motors configured to be rotationally driven by three-phase AC power, and a control device configured to control centrifuging operation, wherein one of the plurality of motors is a centrifuge motor configured to rotate the rotor, and the control device is configured to change distribution of power supplied to the centrifuge motor and power supplied to another motor of the plurality of motors during one operation.
A centrifuge including a temperature sensor measuring ambient temperature is provided. Centrifugation operation is available or not is determined in accordance with a type of a rotor, the ambient temperature, or operation conditions set by a user. When it is inoperable, a display device displays that it is inoperable so as to invite the user to select necessity of modification of the operation conditions. Upon the display, modified operation conditions which are candidates of operable operation conditions are displayed to let the user select a candidate. To operate under the selected setting operation conditions, the display device displays that the operation is working under modified conditions.
A centrifuge capable of suppressing a long-time depressurization as compared with the case of starting depressurizing after cooling has been completed as well as shortening a cooling time of a rotor and a sample in the rotor is achieved as compared with the case of starting cooling is at the same time with depressurization. Operation of a Peltier element is started at the same time with operation start of the centrifuge. A bowl is cooled by heat absorption of the Peltier element, and the rotor is cooled by the bowl with using ambient air as a thermal medium. At this time, a vacuum pump depressurizing a rotor chamber is in an OFF state (ambient conditions). After a predetermined time is elapsed, the vacuum pump is turned on to start depressurization of the inside of the rotor chamber.
A centrifuge includes a vacuum pump machine configured of an auxiliary vacuum pump and an oil diffusion pump for exhausting gas inside a rotary chamber to outside, in which a rotor rotates at high speed. In the centrifuge, a thermistor for detecting a temperature of oil and an oil surface inside a boiler of the oil diffusion pump is provided inside the boiler, and power of a heater is adjusted with the temperature detected by the thermistor, so that a degree of vacuum inside the rotary chamber is stably reduced from atmospheric pressure to a high vacuum state. Besides, when the heater does not heat, a current is carried through the thermistor for self-heating, and it is determined from variation in a resistance value whether the oil exists or not at a position at which the thermistor 8 is placed.
A centrifuge including: a rotor configured to be driven by a motor and to hold a sample, a centrifuge inverter, a chamber accommodating the rotor, a temperature sensor configured to detect the temperature of the chamber, a cooling machine configured to cool the chamber and including a compressor, a compressor inverter, a compressor motor configured to be controlled in a variable speed and a control device, wherein the control device carries out a feedback control of the compressor motor based on a preset temperature and a detected temperature of the temperature sensor when the rotation number of the compressor motor is larger than a predetermined rotation number, and the control device carries out an intermittent control for turning ON-OFF the cooling function of the compressor when the rotation number of the compressor motor is smaller than a predetermined rotation number.
A swing rotor for a centrifugal separator, the swing rotor including: a hub; and a rotor body disposed around the hub, wherein a plurality of pairs of arms are disposed at the rotor body, wherein a holding pin configured to hold a bucket is disposed to the arm, wherein an engagement portion which is configured to be supported by the holding pin is formed to the bucket, and wherein a sliding surface of the holding pin with an engagement portion of the bucket is formed such that a width of a contact area, which is an area that the holding pin contacts with the engagement portion of the bucket, in an axial direction when the bucket does not swing differs from a width of the contact area in the axial direction when the bucket reaches a horizontal position by swinging during a centrifugal separation operation.
A centrifugal separator includes: a rotor configured to hold a sample to be separated; a driving device configured to rotate the rotor and including a driving shaft; a chamber configured to contain the rotor and including a through hole through which the driving shaft is passed; a seal member configured to fitted over the through hole of the chamber and the driving shaft; a drain hole configured to discharge liquid in the chamber to an exterior; and an undulated part configured to guide a flow of the liquid and is provided on an upper surface of the seal member.
A centrifuge includes: a driving unit; a rotor configured to be rotated by the driving unit and hold a sample; a control unit configured to control rotation of the driving unit; and a communication controller configured to communicate with an external network. The control unit has an automatic transmission mode in which operation data is collected at predetermined intervals while the centrifuge is operating and the operation data is periodically transmitted to a data managing apparatus through the network.
According to an aspect of the present invention, there is provided a centrifuge including: a driving unit which rotates a rotor on which a sample is held; an input/output unit which displays information thereon and receives an input from a user therethrough; and a control unit which controls a rotation speed of the rotor to an input set rotation speed; wherein, when the rotor is rotating, the input/output unit displays first time information corresponding to a time when the rotor has been accelerated to the set rotation speed.
A continuous centrifuge includes: a cylindrical rotor configured to separate a specimen; a centrifuging chamber accommodating the rotor; a driving unit configured to rotate the rotor; a specimen line configured to continuously supply and discharge the specimen to and from the rotor during rotation of the rotor; and a controller configured to control the driving unit. The control unit has a cleansing mode which flows a liquid chemical through the specimen line so as to conduct sterilization and/or cleansing while rotating the rotor.
A centrifugal separator comprising: a driving portion; and a swing rotor including, a rotor body, a through-hole passing through the rotor body, pin insert grooves which are provided parallel to the through-hole so as to oppose each other and only partially penetrate the rotor body, and a bucket including, a bucket body that has a contact surface which is configured to contact the rotor body during centrifugal separation, and a cap assembly that seals the bucket body and has a swing shaft extending in a direction perpendicular to an longitudinal direction of the bucket, wherein the swing rotor is rotated when the bucket is inserted into the through-hole, to swing the bucket, and the swing shaft can be moved in the longitudinal direction of the bucket relative to the bucket body and rotated about a longitudinal central axis of the bucket.
A centrifuge comprises a rotor for holding a sample, a rotation chamber for housing the rotor, a motor for rotating the rotor, an oil diffusion pump for reducing a pressure within the rotation chamber, and a control unit for controlling the heater temperature of the oil diffusion pump for a target set temperature. The control unit changes the target set temperature from a first given temperature to a second given temperature that is lower than the first given temperature after a given period of time elapses since the start of control of the heater temperature.
A rotor includes a plurality of holding cavities for holding specimen containers, respectively. A transverse cross sectional shape of the holding cavity is a substantially triangular shape having one vertex on an inner circumference side of the rotor. Two vertices of the substantially triangular shape are arranged on an outer circumference side of the rotor so as to have equidistance from a rotary shaft of the rotor. Spacing between sides of the substantially triangular shape in a circumferential direction of the rotor gradually increase over 60% or more a radial length of the holding cavity from an innermost circumferential position to the outer circumference side of the rotor when viewed in its transverse plane.
The present invention provides a zonal centrifuge which has superior workability and functionality when a sample is filled and extracted. An oil bearing fitted to an outer circumference of a lower tube of a rotor is arranged on an internal face of a bearing housing fixed over a door adapter of the centrifuge. As the oil bearing and the lower tube are lubricated, a vacuum environment in a rotor rotating chamber is maintained. A rotating seal located at an upper leading end of the lower tube of the rotor and a fixing seal facing the rotating seal are arranged and provided in a sealed space formed by a mechanical seal member and the bearing housing, and the fixing seal is so manipulated as to be able to freely join and separate from the rotating seal.
According to an aspect of the invention, a centrifuge includes: a rotor for separating samples; a motor for driving and rotating the rotor; a drive shaft for connecting together the motor and the rotor; a rotation sensor for detecting at least one of the rotation speed of the motor and the rotor; and a displacement sensor for detecting the swinging motion of the rotor or the drive shaft, wherein, after one of speed of the motor and the rotor is accelerated up to previously set rotation speed, when the swinging amount of the rotor or the drive shaft is equal to or more than preset allowable value, the supply of power to the motor is stopped to decelerate the motor, wherein, during the deceleration, signal from the displacement sensor is compared with the preset allowable value, and wherein when the signal from the displacement sensor becomes equal to or less than the preset allowable value, the motor is accelerated.
According to an aspect of the present invention, there is provided a centrifuge including: a rotor rotated by a driver; a chamber housing the rotor therein; a cover openable and closable with respect to the chamber; and a lock mechanism that locks the cover in a closed state, wherein the lock mechanism includes: a motor; a first hook rotated by the motor; and a second hook connected to the first hook through a connecting member, wherein the cover includes a securing portion on which the first hook and the second hook are respectively secured when the cover is locked, and wherein, during a locking operation of the cover, primary the first hook is engaged with the securing portion and pulls the cover toward the chamber, and then the second hook is engaged with the securing portion.
According to an aspect of the present invention, there is provided a centrifuge in which a steam sterilization of a sample flow passage is performed, the centrifuge including: a rotor configured to centrifuging a liquid sample; a drive portion that drives and rotates the rotor; a chamber that accommodates the rotor therein, the chamber having a first and a second penetration holes provided on an upper and a bottom portions thereof, respectively; and a first and a second valves disposed on the first and the second penetration holes, respectively; wherein a cooling gas is introduced through one of the first and the second penetration holes and discharged through the other to cool a periphery of the rotor before or after execution of a centrifuging operation of the liquid sample.
According to an aspect of the invention, there is provided a rotor for a centrifuge which includes an annular portion having a plurality of storing portions each holding a sample vessel that contains a sample to be separated, the annular portion being provided with an end face portion at which holes of the storing portions are opened so as to be aligned in a circumferential direction thereof. Concave portions are disposed each between a corresponding pair of the adjacent holes on the end face portion.
A centrifuge includes: a rotation room chamber for defining a rotation room; a lid for closing the rotation room; a locking mechanism configured by a hook for locking the lid in a closed state; a hook catch; a driving mechanism having a link mechanism which converts the rotary movement of the driving shaft portion into a reciprocal movement; and a detection portion for detecting the engagement of the hook with the hook catch in the closed state of the lid. The detection portion includes a disc member fixed to the driving shaft portion and has a concavo-convex outer peripheral surface and sensors for detecting the concave and convex portions. The driving mechanism moves in an interlocked manner with the rotation of the disc member. The positions of the concave and convex portions of the disc member correspond to the position where the hook engages.
09 - Scientific and electric apparatus and instruments
Goods & Services
Metalworking machines and tools; mining machines and apparatus; construction machines and apparatus; loading-unloading machines and apparatus; chemical processing machines and apparatus (not including filters and membrane filters, hydraulic or pneumatic drive units for land vehicles); textile machines and apparatus; lumbering, woodworking, or veneer or plywood making machines and apparatus; pulp making, papermaking or paper-working machines and apparatus; printing or bookbinding machines and apparatus; packaging or wrapping machines and apparatus; plastic processing machines and apparatus; semiconductor manufacturing machines and systems; machines and apparatus for manufacturing rubber goods; stone working machines and apparatus; agricultural machines; agricultural implements other than hand-operated; fishing machines and instruments; sewing machines; glassware manufacturing machines and apparatus; shoe making machines; leather tanning machines; tobacco processing machines; adhesive tape dispensing machines; automatic stamping machines; starters for motors and engines; AC motors and DC motors [not including those for land vehicles but including "parts" for any AC motors and DC motors]; AC generators [alternators]; DC generators; mechanical parking systems; lawnmowers; repairing fixing machines and apparatus; dynamo brushes; curtain drawing devices electrically operated; power-operated potters' wheels; painting machines and apparatus; vehicle washing installations; waste compacting machines and apparatus; waste crushing machines; electric arc welding machines; electric metal cutting machines (by arc, gas or plasma). Laboratory apparatus and instruments; measuring or testing machines and instruments; electric or magnetic meters and testers; all of the aforesaid exclusively for lifescience uses.
