WO2004028704A1 - スプレーポンプの検査装置及び検査方法 - Google Patents
スプレーポンプの検査装置及び検査方法 Download PDFInfo
- Publication number
- WO2004028704A1 WO2004028704A1 PCT/JP2003/011174 JP0311174W WO2004028704A1 WO 2004028704 A1 WO2004028704 A1 WO 2004028704A1 JP 0311174 W JP0311174 W JP 0311174W WO 2004028704 A1 WO2004028704 A1 WO 2004028704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spray pump
- vibration sensor
- spray
- pump
- inspection
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/48—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by amplitude comparison
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/082—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to a condition of the discharged jet or spray, e.g. to jet shape, spray pattern or droplet size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
Definitions
- the present invention relates to a spray pump inspection device and an inspection method for inspecting an initial failure of a spray pump used for a pump spray container such as a cosmetic container or a chemical container.
- FIG. 5 shows an example of a conventional spray pump 20.
- This spray pump 20 includes a pump housing 21, a spring 22, a clapper valve (blocking member) 23, a gasket 24, a perforated ferrel 25, a stem 26, a turret 27, an actuator 28, and a spray insert 29.
- a spray chamber 30 for storing the liquid content is formed in the housing 21. The internal volume of the spray chamber 30 decreases when the actuator 28 is operated, and the liquid content in the spray chamber is pressurized. .
- the pressurized content liquid pushes the clapper 23 down against the urging force of the spring 22 so as to separate from the stem 26, and the flow path between the stem 26 and the clapper 23 opens, and the content liquid is opened.
- the clapper 23, the stem 26 and the actuator 28 return to the original position by the urging force of the spring 22, and at that time, the liquid in the bottle is sucked up from the lower opening of the housing 21 and sprayed.
- the chamber 30 is filled with the content liquid.
- the spray pump 20 is a kind of a storage pressure type spray pump and also a kind of a mechanical spray pump.
- the spray pump 20 is also referred to as a non-airbag pump.
- it is a pump system that does not replenish the bottle with outside air at all.
- a typical example of the use of this non-airbag pump is a pharmaceutical container containing an anaerobic drug solution or the like. Pharmaceuticals are used for the human body. Pumps need to be more accurate and rigorous than those for other uses. Therefore, 100% inspection has been conducted on the above non-airbag pumps.
- Inspection of a conventional spray pump is performed by the following steps of inspecting the pump body, which includes a leaf proofness check and a priming check, and a step of inspecting an actuator attached to the stem.
- the pump body is inspected with the actuator removed in this way, the differential pressure can be read with the actuator attached since the amount of air sprayed from the spray port of the actuator is extremely small. Because there is no.
- Reef proof Ness check put pressurized air IX 10 5 Pa from wicking port 21 a lower housing 21, the housing 21 to measure the amount of air exiting through air stem 26 side, the air amount It is to determine whether or not it is within the standard. If there is an assembly failure or the like, the air amount becomes out of the standard due to air leakage, and the failure can be determined.
- the priming check is as follows: When the orifice of the stem 26 is closed and the stem 26 is pressed down twice to perform the actuation operation, a suction force (negative pressure) is generated at the suction port 21 a at the lower portion of the housing 21. This negative pressure is measured by a negative pressure sensor to determine whether the pressure is within the standard.
- Patent Document 1 JP-A-8-29211
- Patent Document 2 JP-A-2000-180308
- Patent Document 3 JP 2001-108518 A Disclosure of the Invention
- the above-mentioned conventional spray pump inspection method requires two different check processes, and a new inspection method that can more quickly and accurately determine defective products has been desired. Furthermore, in the conventional inspection method, measurement accuracy is determined by the assembly accuracy of the product and the adjustment of the inspection device. There is also a problem that the results may vary considerably, so that the range of acceptance criteria must be expanded. Therefore, the present invention provides a novel spray pump inspection apparatus and an inspection method that can perform accurate quality judgment even in a state in which an actuator is assembled, and have better inspection ability and operability than before. That is the task.
- the present inventors have collected various angular force measurement data such as pressure, flow rate, and sound (vibration) for each of a normal product, a user-claimed product, and a defective product intentionally lost. By analyzing these data, the inventors particularly focused on the sound during the actuation operation. When the spray pump was operated manually at the ear, a slight difference in sound was found between the normal product and the user-claimed product and the defective product. However, in order to achieve automation by the inspection device, a clear threshold value is required, but a clear threshold value could not be found in the waveform of the spray noise itself.
- the inventors of the present application searched for a frequency band in which there is a clear difference between a normal spray product and a defective spray pump, and found that a normal product and a defective product were found in a low frequency band where it is normally difficult to hear with ears. It was found that there was a clear difference. .
- the present invention based on such knowledge is a spray pump inspection device that sprays a liquid contained in a container to the outside of the container, wherein a vibration sensor provided near the spray pump and a spray pump in the air are provided.
- Abnormality determining means for determining an abnormality in spraying of the spray pump based on a low-frequency signal component having a frequency equal to or lower than a predetermined frequency included in a detection signal of the vibration sensor when operated in step (1).
- the vibration sensor is arranged separately from the spray pump.
- the present invention described above can be suitably applied to a storage pressure type spray pump or a mechanical spray pump.
- a spray chamber is formed in the housing of the spray pump for storing the content liquid.
- the spray chamber has a reduced internal volume when the actuator is operated, so that the content liquid in the spray chamber is pressurized.
- the pressurized content liquid pushes the closing member down from the stem against the urging force of the spring provided in the housing to open the flow path between the stem and the closing member, thereby allowing the content liquid to flow.
- the present invention can be suitably applied to a spray pump configured to be sprayed through the inside of the stem.
- the spray pump is operated in the air, so that the spray chamber is not filled with the content liquid, and the inspection is performed by so-called emptying. According to experiments performed by the inventors of the present application, it has been found that the quality can be stably determined.
- the abnormality determining means may include low frequency extracting means for extracting the low frequency signal component by Fourier analysis of a detection signal of the vibration sensor.
- These low-frequency extraction means and abnormality determination means can be realized at relatively low cost by a computer or the like in which analysis software is installed.
- FFT analysis can be suitably used. Note that the present invention also includes a case where all signal processing is performed by analog signal processing.
- the vibration sensor may be a microphone that detects an injection sound of injection air.
- This microphone may be any appropriate microphone, and may be either a dynamic microphone or a condenser microphone.
- the dynamic type includes a ribbon microphone and a moving coil microphone
- the capacitor type includes a DC bias type condenser microphone, an electret condenser microphone, and a high frequency type condenser microphone.
- electret condenser microphones include a membrane electret type and a back electret type. If the microphone to be used is changed to another type, it is expected that the predetermined frequency, which is the above threshold, will fluctuate due to the difference in the frequency characteristics of the microphone. It is possible.
- the vibration sensor may be configured to detect the jet air jetted from the jet port when the spray pump operates.
- the vibration sensor c may be configured to detect the jet air jetted from the jet port when the spray pump operates.
- the vibration sensor may be arranged near the suction port of the spray pump.
- the sensor can detect low-frequency sound leaking from the suction rocker at the time of injection, and can also detect pressure fluctuations near the suction port during operation of the operation.
- Whether the vibration sensor is located near the outlet or the inlet can be changed as appropriate depending on the structure of the spray pump. Vibration sensors are located near both the outlet and the inlet, respectively. However, it is also possible to set an exceptional condition for the quality judgment based on the correlation between the detection signals of both sensors.
- the abnormality determining means may include a storage means for storing reference data. In this case, it is possible to determine an abnormality in the injection of the spray pump by comparing the low frequency signal component with the reference data.
- This storage means can be constituted by, for example, a memory or an external storage device, and the comparison can be performed by a computer, an ASIC, or the like.
- the predetermined frequency is preferably 100 Hz or less, more preferably 50 Hz or less. In this way, by extracting only the low-frequency components of 100 Hz or less or 50 Hz or less contained in the spray noise, it is possible to accurately and quickly determine the quality of the product.
- a predetermined filter such as a low-pass filter or a high-pass filter, it is possible to more clearly extract a signal component in a specific frequency band.
- the present invention is a method for detecting a spray pump for injecting a liquid contained in a container to the outside of the container, wherein a vibration sensor is arranged near the spray pump and the spray pump is operated in air.
- the abnormality of the spray of the spray pump is determined on the basis of the low frequency signal component below a predetermined frequency included in the detection signal of the vibration sensor.
- the low frequency signal component can be extracted by performing a Fourier analysis on a detection signal of the vibration sensor.
- the vibration sensor may be a microphone that detects the injection sound included in the injection air. Further, the vibration sensor may be configured to detect the jet air jetted from the jet port when the spray pump operates. Further, the vibration sensor may be arranged near the suction port of the spray pump. g In the above-described inspection method, it is preferable that the abnormality of the spray of the spray pump is determined by comparing the low-frequency signal component with predetermined reference data.
- FIG. 1 is an overall system configuration diagram of an inspection device according to one embodiment of the present invention.
- FIG. 2 is a time-axis waveform diagram of a fog sound during the operation of a good product.
- FIG. 3 is a time-axis waveform chart of the spray noise during the operation of the defective product.
- FIG. 4 is a spectrum waveform diagram in a low frequency band of the spray sound of each sample.
- FIG. 5 is a longitudinal sectional view showing an example of the spray pump. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is an overall system configuration diagram of a spray pump inspection device 1 according to one embodiment of the present invention.
- the inspection device 1 is opposed to a first small vibration sensor 2 that is spaced apart and located near the suction port 21a of the spray pump 20 and is spaced apart and is located near the ejection port 20a of the spray pump 20.
- a second compact vibration sensor 3 an amplifier 4 for amplifying the detection signal of each sensor 2 and 3, an A / D converter 5 for analog-to-digital conversion of the detection signal amplified by the amplifier 4, and the conversion
- a personal computer 6 abnormality determining means for inputting the digital signal converted by the detector 5 and analyzing the signal.
- the inspection apparatus 1 can include a fluid pressure cylinder that operates the spray pump 20 in an actuation manner, a conveyor that sequentially conveys the plurality of spray pumps 20 to the cylinder, and the like.
- a spray pump 20 which is set sequentially is operated in air by a cylinder (that is, in a state where liquid to be sprayed is not originally present).
- the signal is input to the computer 6 via the amplifier 4 and the A / D converter 5.
- the actuator 28 may be assembled in advance, or the inspection may be performed with the actuator 28 removed in the same manner as in the conventional method.
- Electrec condenser microphones are used as the sensors 2 and 3.
- the frequency characteristic of the microphone is DC to 20 kHz. Since the vibration sensor 2 is arranged near the suction port 21a of the spray pump 20, it is possible to collect the sound inside the pump leaking from the suction port 21a. Further, the vibration sensor 3 detects a spray noise included in the injection air injected through the flow passage in the stem when the spray pump 20 operates. Further, the vibration sensor 3 directly detects the wind pressure of the injection air and converts it into an electric signal.
- the frequency characteristic of the amplifier 4 is DC to 100 kHz.
- the AZD converter 5 may be a low-speed one.
- the computer 6 includes a CPU, a memory, an external storage device such as a hard disk, an I / O interface, an input board to which the AZD converter 5 is connected, and an A / D converter.
- Analysis software for analyzing the input digital signal from the detector 5 is installed.
- the analysis software stores the detection signals of the sensors 2 and 3 converted into digital signals in storage means such as an external storage device or a memory. Furthermore, it is also possible to confirm reproducibility and perform data analysis by converting the measurement data into a history and creating a database.
- reference data serving as a criterion for quality determination is also stored in the storage unit.
- This reference data may be appropriate. For example, a frequency waveform obtained by measuring spray noise in advance for a plurality of defective samples (for example, 5 to 20 samples) and averaging the measured data can be used as reference data.
- the detection signal is applied to a low-pass filter using an analog circuit or software to extract a non-audible frequency band component of about 3 to 100 Hz.
- the analysis software performs an FFT analysis on the detection signal of the spray noise from the sensors 2 and 3 and extracts a low-frequency component of 100 Hz or less, more preferably 50 Hz or less. Low frequency extracting means).
- FIG. 2 shows the measurement results of a non-defective pump. An example of a g- information signal is shown. Similarly, Fig. 3 shows the measurement results for defective products.
- the time axis waveforms of these injection sounds are converted into digital signals, input to the computer 6, and subjected to FFT analysis by an analysis software to extract only low-frequency components of 100 Hz or less.
- FIG. 4 shows a spectrum waveform diagram of the extracted low-frequency component.
- waveform A is the spectrum waveform of a good spray pump 20
- waveform B is the spectrum waveform of a good spray pump with a built-in filter
- waveform C is the spectrum waveform of a defective product.
- the peak level of the waveform is large for the non-defective product, while the peak level of the waveform is almost 0 for the defective product, and it is possible to accurately determine the abnormality.
- the discriminant for abnormality determination is not limited to a specific one, but may be based on the integrated value of each spectrum waveform, or may be based on the peak value of each spectrum waveform. Can be adopted.
- a pump having a structure that cannot be inspected by a conventional method using a pressure sensor or the like can be inspected without contaminating the pump, and a pump that can be inspected by a conventional method can also be inspected.
- the focus is on the low-frequency components of the pump spray noise, stable and accurate inspections can be performed in the audible range without being affected by various affected sound sources.
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- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003257610A AU2003257610A1 (en) | 2002-09-27 | 2003-09-01 | Apparatus and method for inspecting spray pump |
US10/523,097 US20050263611A1 (en) | 2002-09-27 | 2003-09-01 | Apparatus and method for inspecting spray pump |
EP03798385A EP1543885A4 (en) | 2002-09-27 | 2003-09-01 | APPARATUS AND METHOD FOR INSPECTING SPRAY PUMPS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002284573A JP4020249B2 (ja) | 2002-09-27 | 2002-09-27 | スプレーポンプの検査装置及び検査方法 |
JP2002-284573 | 2002-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004028704A1 true WO2004028704A1 (ja) | 2004-04-08 |
Family
ID=32040587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/011174 WO2004028704A1 (ja) | 2002-09-27 | 2003-09-01 | スプレーポンプの検査装置及び検査方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050263611A1 (ja) |
EP (1) | EP1543885A4 (ja) |
JP (1) | JP4020249B2 (ja) |
CN (1) | CN100348334C (ja) |
AU (1) | AU2003257610A1 (ja) |
WO (1) | WO2004028704A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4509832B2 (ja) * | 2005-03-18 | 2010-07-21 | 株式会社イシダ | 計量包装検査システム |
US7502665B2 (en) * | 2005-05-23 | 2009-03-10 | Capstan Ag Systems, Inc. | Networked diagnostic and control system for dispensing apparatus |
DE102007062132A1 (de) * | 2007-12-21 | 2009-07-02 | Dürr Systems GmbH | Testverfahren und Testgerät zur Funktionsprüfung einer Lackiereinrichtung |
CN103091098B (zh) * | 2013-02-04 | 2015-08-26 | 农业部南京农业机械化研究所 | 一种空间雾量分布测试装置 |
JP6063770B2 (ja) * | 2013-02-26 | 2017-01-18 | アキレス株式会社 | 混合噴射装置の異常予告装置 |
WO2018003396A1 (ja) | 2016-06-30 | 2018-01-04 | Abb株式会社 | 状態判定装置、方法、プログラム、記録媒体 |
US10227890B2 (en) * | 2016-08-18 | 2019-03-12 | Delavan, Inc. | Resonant modes in sprays |
US10573291B2 (en) | 2016-12-09 | 2020-02-25 | The Research Foundation For The State University Of New York | Acoustic metamaterial |
US20210146385A1 (en) * | 2019-11-19 | 2021-05-20 | Spraying Systems Co. | Rotation detection in a hydraulic drive rotating tank cleaning spray nozzle |
CN111773603A (zh) * | 2020-06-04 | 2020-10-16 | 四川伊顿电气有限公司 | 一种消防泵自动巡检控制设备及其电气控制电路 |
Citations (8)
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JPS57145561U (ja) * | 1981-03-10 | 1982-09-13 | ||
JPS59216050A (ja) * | 1983-05-23 | 1984-12-06 | Toyota Motor Corp | スプレ−ガンのノズル詰まり検出装置 |
US5205441A (en) * | 1990-12-21 | 1993-04-27 | Firma Raimund Andris Gmbh & Co. Kg. | Suction and/or discharge valve for a metering and spray pump for dispensing liquid, low-viscosity and pasty substances |
EP0560060A1 (de) * | 1992-03-12 | 1993-09-15 | Raimund Andris GmbH & Co. KG | Dosierpumpe aus Kunststoff für pastenartige Stoffe |
EP0849592A2 (de) * | 1996-12-12 | 1998-06-24 | Jörg Küchen | Verfahren zum Überwachen der Funktion eines Sprühstrahls |
JPH10253486A (ja) * | 1997-03-07 | 1998-09-25 | Japan Tobacco Inc | 気密ハウジングの漏れ検出装置および漏れ検出方法 |
JP2001324381A (ja) * | 2000-05-17 | 2001-11-22 | Nkk Corp | プランジャ−ポンプの異常診断方法 |
JP2002041143A (ja) * | 2000-07-31 | 2002-02-08 | Chiyoda Corp | 動作部の異常診断方法及び圧縮機のバルブ異常診断方法 |
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JPS62212542A (ja) * | 1986-03-14 | 1987-09-18 | Tlv Co Ltd | 蒸気漏洩量測定装置 |
US4905897A (en) * | 1988-06-17 | 1990-03-06 | Ramon Barry Rogers | Field sprayer nozzle pattern monitor |
US5027661A (en) * | 1989-12-18 | 1991-07-02 | Master Flo Technology Inc. | Liquid flow metering |
US5409163A (en) * | 1990-01-25 | 1995-04-25 | Ultrasonic Systems, Inc. | Ultrasonic spray coating system with enhanced spray control |
US5772403A (en) * | 1996-03-27 | 1998-06-30 | Butterworth Jetting Systems, Inc. | Programmable pump monitoring and shutdown system |
JPH1178098A (ja) * | 1997-09-01 | 1999-03-23 | Brother Ind Ltd | 感熱記録装置 |
JP3498607B2 (ja) * | 1998-12-21 | 2004-02-16 | 日産自動車株式会社 | 塗装パターンの検査装置および検査方法 |
US6470751B1 (en) * | 1999-02-20 | 2002-10-29 | Lg Electronics Inc. | Vibration detecting apparatus and method thereof |
-
2002
- 2002-09-27 JP JP2002284573A patent/JP4020249B2/ja not_active Expired - Lifetime
-
2003
- 2003-09-01 AU AU2003257610A patent/AU2003257610A1/en not_active Abandoned
- 2003-09-01 US US10/523,097 patent/US20050263611A1/en not_active Abandoned
- 2003-09-01 WO PCT/JP2003/011174 patent/WO2004028704A1/ja active Application Filing
- 2003-09-01 CN CNB038229854A patent/CN100348334C/zh not_active Expired - Lifetime
- 2003-09-01 EP EP03798385A patent/EP1543885A4/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57145561U (ja) * | 1981-03-10 | 1982-09-13 | ||
JPS59216050A (ja) * | 1983-05-23 | 1984-12-06 | Toyota Motor Corp | スプレ−ガンのノズル詰まり検出装置 |
US5205441A (en) * | 1990-12-21 | 1993-04-27 | Firma Raimund Andris Gmbh & Co. Kg. | Suction and/or discharge valve for a metering and spray pump for dispensing liquid, low-viscosity and pasty substances |
EP0560060A1 (de) * | 1992-03-12 | 1993-09-15 | Raimund Andris GmbH & Co. KG | Dosierpumpe aus Kunststoff für pastenartige Stoffe |
EP0849592A2 (de) * | 1996-12-12 | 1998-06-24 | Jörg Küchen | Verfahren zum Überwachen der Funktion eines Sprühstrahls |
JPH10253486A (ja) * | 1997-03-07 | 1998-09-25 | Japan Tobacco Inc | 気密ハウジングの漏れ検出装置および漏れ検出方法 |
JP2001324381A (ja) * | 2000-05-17 | 2001-11-22 | Nkk Corp | プランジャ−ポンプの異常診断方法 |
JP2002041143A (ja) * | 2000-07-31 | 2002-02-08 | Chiyoda Corp | 動作部の異常診断方法及び圧縮機のバルブ異常診断方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1543885A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1684773A (zh) | 2005-10-19 |
EP1543885A1 (en) | 2005-06-22 |
AU2003257610A1 (en) | 2004-04-19 |
US20050263611A1 (en) | 2005-12-01 |
JP2004113995A (ja) | 2004-04-15 |
EP1543885A4 (en) | 2008-03-26 |
CN100348334C (zh) | 2007-11-14 |
JP4020249B2 (ja) | 2007-12-12 |
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