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1. EP3779395 - FINE PARTICLE ANALYSIS DEVICE, FINE PARTICLE ANALYSIS SYSTEM, AND CLEANING METHOD

Office
European Patent Office
Application Number 19776825
Application Date 01.03.2019
Publication Number 3779395
Publication Date 17.02.2021
Publication Kind A1
IPC
G01N 1/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
B01D 45/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
45Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
12by centrifugal forces
B04C 5/14
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
14Construction of the underflow ducting; Apex constructions; Discharge arrangements
B04C 5/20
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
20with heating or cooling, e.g. quenching, means
B04C 5/22
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
22with cleaning means
B04C 9/00
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
9Combinations with other devices, e.g. fans
CPC
B01D 45/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
45Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
12by centrifugal forces
B04C 5/14
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
14Construction of the underflow ducting; Apex constructions; Discharge arrangements ; ; discharge through sidewall provided with a few slits or perforations
B04C 5/20
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
20with heating or cooling, e.g. quenching, means
B04C 5/22
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
5Apparatus in which the axial direction of the vortex is reversed
22with cleaning means
B04C 9/00
BPERFORMING OPERATIONS; TRANSPORTING
04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
9Combinations with other devices, e.g. fans, ; expansion chambers, diffusors, water locks
G01N 1/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
Applicants HITACHI LTD
Inventors KUMANO SHUN
NAGANO HISASHI
ITOU TAKAHIRO
MIZUNO HIROKI
NOJIRI TATSUO
SUGIYAMA MASUYUKI
Designated States
Priority Data 2018068083 30.03.2018 JP
Title
(DE) FEINTEILCHENANALYSEVORRICHTUNG, FEINTEILCHENANALYSESYSTEM UND REINIGUNGSVERFAHREN
(EN) FINE PARTICLE ANALYSIS DEVICE, FINE PARTICLE ANALYSIS SYSTEM, AND CLEANING METHOD
(FR) DISPOSITIF D'ANALYSE DE PARTICULES FINES, SYSTÈME D'ANALYSE DE PARTICULES FINES ET PROCÉDÉ DE NETTOYAGE
Abstract
(EN)
The present invention includes, in order to clean inside of a fine particle analyzer without stopping and disassembling the fine particle analyzer, a cyclone dust collector (14), a primary filter (16) connected downstream of the cyclone dust collector (14) and configured to be heated, a gas analyzer (31) connected to the primary filter (16), a gas pipe portion connecting the cyclone dust collector (14) with the gas analyzer (31) and provided with the primary filter (16), and a cleaning gas introduction device (21) configured to introduce a cleaning gas to at least one of a space in the gas pipe portion downstream of the primary filter (16), at least the primary filter (16) is cleaned in a cleaning mode, the gas analyzer (31) analyzes fine particles in an analysis mode, and the cleaning gas introduced from the cleaning gas introduction device (21) has a flow rate which is increased in the cleaning mode, so that the flow rate in the cleaning mode is larger than in the analysis mode.

(FR)
L'invention concerne un dispositif d'analyse de particules fines, et pour nettoyer l'intérieur de celui-ci sans arrêter ou démonter le dispositif d'analyse de particules fines, ce qui suit est fourni : un dispositif de collecte de poussière à cyclone (14) ; un filtre primaire (16) qui est raccordé en aval du dispositif de collecte de poussière à cyclone (14) et qui est chauffé ; un dispositif d'analyse de gaz (31) qui est raccordé au filtre primaire (16) ; une section de tuyauterie de gaz qui raccorde le dispositif de collecte de poussière à cyclone (14) et le dispositif d'analyse de gaz (31), et qui possède, disposé dans celui-ci, le filtre primaire (16) ; et un dispositif d'introduction de gaz de nettoyage (21) qui introduit un gaz de nettoyage en aval du filtre primaire (16) dans la section de tuyauterie de gaz et/ou vers le dispositif de collecte de poussière à cyclone (14). La présente invention est caractérisée en ce que, au cours d'un mode de nettoyage dans lequel au moins le filtre primaire (16) est nettoyé, le débit du gaz de nettoyage qui est introduit à partir du dispositif d'introduction de gaz de nettoyage (21) augmente de manière à être supérieur au débit au cours d'un mode d'analyse dans lequel des particules fines sont analysées par le dispositif d'analyse de gaz (31).