Abrégé

A flowmeter suitable for flow measurement of extremely-low temperature fluids and high temperature fluids includes a flow path pipe having a flow path for fluid to flow through; an impeller supported in the interior of the flow path pipe in a rotatable manner; and a sensor that measures the flow of the fluid flowing in the flow path through the rotation of the impeller. The sensor has a metal-based wiring substrate inside a sensor housing provided outside the flow path pipe. The wiring substrate is equipped with a magnetic sensor package that detects the magnetic force of the impeller; a heater that heats the wiring substrate; and a temperature control circuit that controls the heater to power on/off based on the temperature of the wiring substrate.

Classes IPC  ?

• G01F 1/115 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission axiale avec accouplement magnétique ou électromagnétique au dispositif indicateur
• G01F 1/075 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission tangentielle avec accouplement magnétique ou électromagnétique au dispositif indicateur

Abrégé

A thermal type flowmeter that can accurately perform flow rate determination at high speed and high precision even at low flow rate includes a sensor portion conducting heating and temperature detection of a fluid contact portion in contact with a fluid flowing in a flow path, and a control portion controlling heating and temperature detection conducted by the sensor portion. The control portion measures the temperature rise time until the temperature of the fluid contact portion reaches an upper limit set temperature when heating the fluid contact portion and the temperature drop time until the temperature of the fluid contact portion reaches a lower limit set temperature when stopping heating the fluid contact portion, and based on the temperature rise time and the temperature drop time, converts a determined flow velocity into a flow rate value so as to perform flow rate determination.

Classes IPC  ?

• G01F 1/69 - Dispositions de structureMontage des éléments, p. ex. relativement à l'écoulement de fluide utilisant un élément de chauffage, de refroidissement ou de détection d'un type particulier du type à résistance
• G01F 1/698 - Circuits de réaction ou de rééquilibrage, p. ex. débitmètres auto-chauffés à température constante

Abrégé

Provided is a flow rate control device capable of suppressing variation of supply pressure caused by variation of set flow rate and suppressing influence of pressure loss and cavitation on a secondary side. The flow rate control device (18) includes: a flow rate regulating valve (19) that regulates a flow rate of fluid flowing in a flow path; a flow meter (20) that measures the flow rate of the fluid flowing in the flow path; and a control portion (21) that controls an opening degree of the flow rate regulating valve (19) based on a measurement result of the flow meter (20), the flow rate regulating valve (19) is a three-way valve for dividing to regulate fluid flowing in from an inflow port (24) to a first outflow port (25) and a second outflow port (26), the flow meter (20) is connected to the second outflow port (26) side, and a multistage throttle orifice (22) for decompressing the pressure of the fluid in stages is provided on the first outflow port (25) side.

Classes IPC  ?

• F16K 31/04 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un moteur
• F16K 11/072 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des tiroirs à éléments de fermeture articulés à pivot

Abrégé

A flow rate control device capable of suppressing overshoot while improving responsiveness at the beginning of flow rate control includes: a flow rate meter that measures a flow rate of a fluid flowing through a flow path; a flow rate regulating valve that regulates the flow rate of the fluid flowing through the flow path; and a control part that controls an opening degree of the flow rate regulating valve based on a measurement result of the flow rate meter, the flow rate control device has: a low flow rate rapid valve opening function that accelerates an outflow of the fluid by forcibly opening the opening degree of the flow rate regulating valve from fully closed degree to a designated opening degree when the opening degree of the flow regulating valve is fully closed and a flow rate control is started; and an overshoot suppressing function that is used for suppressing the overshoot by making the flow rate control stand by until a preset standby time or a preset flow rate threshold is reached immediately after the low flow rate rapid valve opening function works.

Classes IPC  ?

• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques

Abrégé

Provided is a flow rate control device capable of improving accumulated flow rate error. The flow rate control device of the present disclosure includes: a flow rate meter that measures a flow rate of a fluid flowing through a flow path; a flow rate regulating valve that regulates the flow rate of the fluid flowing through the flow path; and a control part that controls an opening degree of the flow rate regulating valve based on a measurement result of the flow rate meter, includes: a closing function that controls the opening degree of the flow rate regulating valve with an instantaneous flow rate value and closes with a set accumulated flow rate value; and an accumulated value prediction function that monitors the current opening degree of the flow rate regulating valve and the instantaneous flow rate value all the time, and starts a closing operation of the flow rate regulating valve at a time point when the accumulated flow rate value reaches an early closing flow rate value.

Classes IPC  ?

• G05B 19/00 - Systèmes de commande à programme
• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques
• G05B 19/416 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par la commande de vitesse, d'accélération ou de décélération

Abrégé

A mold temperature control system that controls temperature of mold in a diecasting machine, includes temperature sensors that detect mold temperatures of individual parts of the mold, flow controllers that control instantaneous flow rates of cooling water that cools the parts of the mold, and a control device that acquires the mold temperatures detected by the temperature sensors, computes deviations between target mold temperature and the current mold temperatures at every production cycle, converts the deviations into flow rate values, and transmits the flow rate values to the flow controllers.

Classes IPC  ?

• B22D 17/22 - Moules métalliquesPlaques de moulesSupports de moulesÉquipement de refroidissement des moulesAccessoires pour l'extraction et l'éjection des pièces hors du moule
• B22D 17/32 - Appareillage de commande

Abrégé

An object is to provide a flow rate control device that can suppress a manufacturing cost and greatly reduce burdens of setting and maintenance. A flow rate control device 11 of the invention is comprised with a flow rate adjusting valve 21 that is installed in a flow path 13, a flow rate measurement part 41 that measures a flow rate of a fluid flowing through the flow path 13, a controller 61 that controls opening degrees of the flow rate adjusting valve 21 based on a measurement result of the flow rate measurement part 41, and a pressure deficiency detecting function that detects pressure deficiency when a limit sensor 246 (an opening detecting sensor) that detects the opening of the flow rate adjusting valve 21 detects the opening degrees are full. With the structure, it becomes possible, compared with a conventional system to detect a pressure deficiency using a pressure sensor, to suppress a manufacturing cost and greatly reduce burdens of setting and maintenance and to notify of pressure deficiency at a necessary timing in an early stage before an abnormality occurs due to a flow rate decrease.

Classes IPC  ?

• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme

Abrégé

The flow rate control unit 1 is comprised with each of the flow rate control devices 11 connected to (juxtaposedly mounted on) the manifold 2 by the joint 91 interposed between each of the flow rate control devices 11 and the manifold 2. Each of the flow rate control devices 11 can be attached to or detached from the manifold 2 by manually operating (attaching/detaching) the clip 93 without using a tool. Because there is no need to secure space to insert a tool between the adjacent flow rate control devices 11, the mounting pitch between the adjacent flow rate control devices 11 (joints 91) can be reduced to the minimum, allowing miniaturization of the flow rate control unit 1.

Classes IPC  ?

• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques
• F15B 13/08 - Assemblages de distributeurs élémentaires utilisés chacun pour la commande d'un seul servomoteur

Abrégé

A ball valve includes a ball that has a passage hole and is rotatably supported, a ball packing that is made of polyimide and is in contact with an outer circumferential face of the ball, and a ball retainer that holds the ball packing, and a spring-loaded lip seal that is installed between the ball packing and the ball retainer and has a metallic spring fit inside a seal case made of a resin.

Classes IPC  ?

• F16K 11/087 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des robinets à boisseau à noix sphérique
• F16K 5/06 - Robinets à boisseau consistant seulement en un dispositif obturateur dont au moins une des faces d'obturation a la forme d'une surface de solide de révolution plus ou moins complète, le mouvement d'ouverture et de fermeture étant essentiellement rotatif dont les boisseaux sont à surface sphériqueLeurs garnitures d'étanchéité
• F16K 31/05 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un moteur spécialement conçus pour manœuvrer les soupapes à fonctionnement manuel ou pour la manœuvre conjuguée au moteur et à la main
• F16K 5/20 - Dispositions particulières pour tenir écartées les faces d'obturation ou pour les presser l'une contre l'autre dans le cas des boisseaux à surface sphérique

Abrégé

A flowmeter includes a metallic body that has a flow path therein, an impeller that is rotatably supported in the flow path inside the body, a pickup coil that is configured to detect a number of rotations of the impeller, the pickup coil being disposed outside the body, a coil case that is made of metal, and accommodates the pickup coil, an amplifier circuit board that is configured to amplify a detection signal of the pickup coil, and an amplifier case that is made of resin, and accommodates the amplifier circuit board. The coil case and the amplifier case are connected via a resin case that is made of resin and includes an insulation material therein.

Classes IPC  ?

• G01F 1/115 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission axiale avec accouplement magnétique ou électromagnétique au dispositif indicateur
• G01F 1/24 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètres à section variable avec accouplement magnétique ou électrique au dispositif indicateur

Abrégé

[Problem] To provide a flowmeter that achieves both high reliability and low cost. [Solution] A flowmeter 1 according to the present invention is provided with: an impeller 42 rotatably supported in a flow path 13; a GMR sensor 53 for detecting a change in the intensity of a magnetic field caused in accordance with rotation of the impeller 42; and a bias magnet 57 for applying a bias magnetic field to the GMR sensor 53, wherein a magnetic body that is not magnetized is used as the impeller 42, and the GMR sensor 53 and the bias magnet 57 are disposed outside the flow path 13. Accordingly, even when a fluid flowing in the flow path 13 contains iron powder, the iron powder does not adhere to or become deposited on the impeller 42, whereby smooth rotation of the impeller 42 is not inhibited. Consequently, the measurement precision of the flowmeter 1 can be ensured.

Classes IPC  ?

• G01F 1/115 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission axiale avec accouplement magnétique ou électromagnétique au dispositif indicateur

Abrégé

Provided is a flowrate control unit that can be downsized. Since a flowrate control unit (1) is configured such that flowrate control devices (11) are connected to a manifold (2) by using joints (91) which can be each divided into a joint adaptor (71) and a joint adaptor (81), each of the flowrate control devices (11) can be attached to/removed from the manifold (2) without using a tool. Thus, as there is no need to secure a space for inserting a tool, the attaching pitch between the adjacent flowrate control devices (11) (joints 91) can be limited to a minimum, and the flowrate control unit (1) can be reduced in size.

Classes IPC  ?

• F16K 27/00 - Structures des logementsMatériaux utilisés à cet effet
• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques

Abrégé

Provided is a flow rate control device with which it is possible to curb manufacturing costs and drastically reduce the burden of setup and maintenance. This flow rate control device (11) is provided with: a flow rate control valve (21) disposed in a flow channel (13); a flow rate measurement unit (41) which measures the flow rate of a fluid flowing through the flow channel (13); and a control unit (61) which controls the opening degree of the flow rate control valve (21) on the basis of a measurement result of the flow rate measurement unit (41). The flow rate control device has an insufficient pressure detection function for detecting which determines insufficient pressure when a limit sensor (valve opening detection sensor) (246) for detecting the opening degree of the flow rate control valve (21) detects a fully open valve. By this configuration, the present invention is capable of warning of insufficient pressure at an early stage before a defect occurs due to a drop in flow rate.

Classes IPC  ?

• F16K 31/04 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un moteur
• F16K 31/06 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un aimant
• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques

Abrégé

Disclosed is a position sensor having a float, which, even when the float is moved after a power supply is turned off, does not require particular adjustment at the time of turning on the power supply next time, and which has a simple structure. The position sensor is provided with the float, and a magnetic sensor, which is provided on the side of the moving direction of the float so as to detect a change of a magnetic field due to moving of the float. The change of the magnetic field due to the moving of the float is detected by means of the magnetic sensor using a movable magnet, which is provided close to the magnetic sensor.

Classes IPC  ?

• G01F 23/62 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme par des flotteurs en utilisant comme éléments de transmission des éléments fixés rigidement aux flotteurs et se déplaçant de manière rectiligne avec ces derniers en utilisant des moyens d'indication actionnés magnétiquement
• G01F 1/24 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètres à section variable avec accouplement magnétique ou électrique au dispositif indicateur

Produits et services

Valves of metal (other than machine elements); pressure reducing valves of metal (other than machine elements); constant flow valves of metal (other than machine elements). Chemical processing machines and apparatus; agitating machines (for chemical processing); mixing or blending machines (for chemical processing); cleaning apparatus (for chemical processing); granulating machines (for chemical processing); emulsifying machines (for chemical processing); disintegrators (for chemical processing); partial condensers (for chemical processing); separating machines (for chemical processing); grinding mills (for chemical processing); dissolving machines (for chemical processing); filtering machines (for chemical processing); food or beverage processing machines and apparatus; semiconductor manufacturing machines and systems; pneumatic or hydraulic machines and instruments; pumps (not for specified purposes); centrifugal pumps (not for specified purposes); reciprocating pumps (not for specified purposes); rotary pumps (not for specified purposes); axial flow pumps (not for specified purposes); mixed flow pumps (not for specified purposes); valves (machine elements not for land vehicles); links (machine elements not for land vehicles); actuators for diaphragm valves; check valves (machine elements not for land vehicles); pneumatic control valves (machine elements not for land vehicles); stainless steel valves, cocks and regulating valves (machine elements not for land vehicles). Laboratory apparatus and instruments; laboratory experimental machines and apparatus; constant temperature incubators; measuring or testing machines and instruments; temperature indicators; pressure gauges (manometers); level indicators (spirit levels); tachometers; speed indicators; calorimeters; viscosimeters; concentration meters; gravimeters; densimeters; flowmeters; automatic pressure control machines and instruments; automatic liquid-flow control machines and instruments; automatic liquid-level control machines and instruments; automatic temperature control machines and instruments; automatic vacuum control machines and instruments; automatic calorie control machines and instruments; ozonisers (ozonators); electrolysers (electrolytic cells); solenoid valves (electromagnetic switches); electronic machines and apparatus; echo sounders; ultrasonic flaw detectors; ultrasonic sensors; automatic control valves of metal (other than machine elements); electric actuator ball valves of metal (other than machine elements); electrically operated proportional valves of metal (other than machine elements); electrically operated valves of metal (other than machine elements); automatic control valves (machine elements not for land vehicles); setting adjusters for automatic pressure regulating valves; automatic control valves of plastic (other than machine elements); automatic control valves for automatic pressure regulating valves. Medical machines and apparatus. Valves of plastic (other than machine elements); check valves of plastic (other than machine elements).

Produits et services

Laboratory apparatus and instruments; laboratory experimental machines and apparatus; constant temperature incubators; measuring or testing machines and instruments; temperature indicators; pressure gauges (manometers); level indicators (spirit levels); tachometers; speed indicators; calorimeters; viscosimeters; concentration meters; gravimeters; densimeters; flowmeters; automatic pressure control machines and instruments; automatic liquid-flow control machines and instruments; automatic liquid-level control machines and instruments; automatic temperature control machines and instruments; automatic vacuum control machines and instruments; automatic calorie control machines and instruments.

Produits et services

[ Constant temperature incubators for laboratory or industrial equipment; ] temperature indicators; [ manometers, namely, pressure gauges; spirit levels, namely, level indicators; tachometers; speed indicators; calorimeters; viscosimeters; concentration meters; gravimeters; densimeters; ] flowmeters; [ automatic pressure control machines and instruments, namely, regulators for commercial, industrial and agricultural use and electropneumatic regulators for commercial, industrial and agricultural use; ] automatic liquid-flow control machines and instruments, namely, flow controllers for commercial, industrial and agricultural use [; automatic temperature control machines and instruments, namely, electronic constant temperature bath heaters for laboratory use ]

Produits et services

Valves of metal other than machine elements[ ; pressure reducing valves of metal other than machine elements; constant flow valves of metal other than machine elements ] [ Chemical processing apparatus, namely, machines for agitating chemicals for industrial and commercial use; machines for mixing or blending chemicals for industrial and commercial use; granulating machines for chemical processing; emulsifying machines for chemical processing; disintegrators for chemical processing; partial condensers for chemical processing; separating machines for chemical processing; grinding mills for chemical processing; dissolving machines for chemical processing; filtering machines for chemical processing; food and beverage processing machines and apparatus; semiconductor manufacturing machines; centrifugal pumps; reciprocating pumps; rotary pumps; axial flow pumps; mixed flow pumps; ] valves being parts of semiconductor manufacturing machines; [ linear actuators for diaphragm valves; check valves for machines; pneumatic control valves for machines; ] stainless steel valves, cocks and regulating valves for machines [ Constant temperature incubators for laboratory or industrial equipment; ] temperature indicators; [ manometers, namely, pressure gauges; spirit levels, namely, level indicators; tachometers; speed indicators; calorimeters; viscosimeters; concentration meters; gravimeters; densimeters; ]flowmeters;[ automatic pressure control machines and instruments; ] automatic liquid-flow control machines and instruments; [ automatic liquid-level control machines and instruments; automatic temperature control machines and instruments; automatic vacuum control machines and instruments; automatic calorie control machines and instruments; ozonisers, namely, ozonators; electrolysers, namely, electrolytic cells; solenoid valves in the nature of electromagnetic switches; echo sounders; ultrasonic flaw detectors; ultrasonic sensors; ] automatic control valves of metal for control of flow and pressure of liquid or gas; electric actuator ball valves of metal for control of flow and pressure of liquid or gas; electrically operated proportional valves of metal for control of flow and pressure of liquid or gas; [ electrically operated valves of metal for control of flow and pressure of liquid or gas; ] automatic control valves for control of flow and pressure of liquid or gas; [ setting adjusters for automatic pressure regulating valves; ] automatic control valves of plastic [; automatic control valves for automatic pressure regulating valves ] Valves of plastic other than machine elements [; check valves of plastic other than machine elements ]