WO2012077254A1 - Dispositif de nettoyage à la vapeur pour un objet nettoyé - Google Patents

Dispositif de nettoyage à la vapeur pour un objet nettoyé Download PDF

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Publication number
WO2012077254A1
WO2012077254A1 PCT/JP2011/003732 JP2011003732W WO2012077254A1 WO 2012077254 A1 WO2012077254 A1 WO 2012077254A1 JP 2011003732 W JP2011003732 W JP 2011003732W WO 2012077254 A1 WO2012077254 A1 WO 2012077254A1
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WIPO (PCT)
Prior art keywords
liquid
solvent
cleaning
steam
hfe solvent
Prior art date
Application number
PCT/JP2011/003732
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English (en)
Japanese (ja)
Inventor
正英 内野
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ジャパン・フィールド株式会社
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Filing date
Publication date
Application filed by ジャパン・フィールド株式会社 filed Critical ジャパン・フィールド株式会社
Publication of WO2012077254A1 publication Critical patent/WO2012077254A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5004—Organic solvents
    • C11D7/5018—Halogenated solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2230/00—Other cleaning aspects applicable to all B08B range
    • B08B2230/01—Cleaning with steam

Definitions

  • the present invention relates to a steam cleaning apparatus for an object to be cleaned.
  • the outflow of solvent gas to the outside is reduced, and safe steam cleaning with less influence on the environment is enabled.
  • it is intended to reduce the consumption of solvent and enable inexpensive steam cleaning.
  • Patent Document 1 when performing steam cleaning of an object to be cleaned, as shown in Patent Document 1, the object to be cleaned is inserted into a cleaning tank, and cleaning steam is introduced into the cleaning tank to perform steam cleaning.
  • chlorinated solvents such as trichlorethylene, methylene chloride, perchlorethylene, and fluorinated solvents such as HCFC-141b, HCFC-225, and HFC have been widely used.
  • many of these solvents are scheduled to be abolished as ozone-depleting substances, and many of them have a high global warming rate and are restricted in future use. There are also carcinogenic substances and highly toxic substances.
  • petroleum-based solvents, silicone-based solvents, terpene-based solvents, alcohol-based solvents, and the like have been used as alternative solvents that cover these drawbacks.
  • the above-mentioned alternative solvents have a low flash point, and there is a danger of ignition when used.
  • high boiling point materials are used, and in order to use them safely, they must be used under reduced pressure, making the equipment cost expensive and making it difficult to disseminate alternative solvents. .
  • the conventional steam cleaning method has not only the above-mentioned disadvantageous problems in the solvent used, but also a problem that the solvent consumption during standby without performing the cleaning operation is large.
  • hydrofluoroether is known as a solvent of the property different from the said fluorine-type solvent, chlorine-type solvent, and an alternative solvent.
  • This HFE solvent has an ozone depletion coefficient of 0, a low global warming coefficient compared to the above-mentioned fluorine-based solvents, chlorine-based solvents and alternative solvents, and is nonflammable, and is also excellent when used for steam cleaning. It has the characteristics.
  • this HFE solvent is expensive and is about 10 to 30 times more expensive than the above-mentioned fluorinated solvents, chlorinated solvents, and alternative solvents. It was not usable.
  • the present invention is intended to solve the above-described problems, and enables an inexpensive steam cleaning operation while performing steam cleaning using an expensive HFE solvent. That is, even if steam cleaning is performed using an expensive HFE solvent, if the consumption of the HFE solvent can be reduced, the HFE solvent can be used repeatedly. As a result, the HFE solvent is used. An inexpensive steam cleaning operation is possible.
  • the present invention enables inexpensive steam cleaning while using an expensive HFE solvent which is excellent in cleaning performance as well as environmental performance.
  • the present invention forms a steam cleaning tank in order to solve the above-mentioned problems.
  • the steam cleaning tank is filled with an HFE solvent liquid at the bottom, and the upper surface of the HFE solvent liquid is covered with a surface coating liquid formed of a liquid having a specific gravity lower than that of the HFE solvent liquid and a high boiling point.
  • a surface coating liquid formed of a liquid having a specific gravity lower than that of the HFE solvent liquid and a high boiling point.
  • the upper surface of the surface coating liquid is used as a vapor cleaning zone for the object to be cleaned, and the HFE solvent liquid that has condensed and liquefied by contact with the object to be cleaned in this vapor cleaning zone is dropped on the upper surface of the surface coating liquid. It moves from the surface coating liquid side to the HFE solvent liquid side due to the specific gravity difference and is coated with the surface coating liquid.
  • a steam generation tank is connected to the steam cleaning tank via an opening / closing valve, and the HFE solvent liquid filled in the steam generation tank is heated to generate cleaning steam, and the cleaning steam is supplied to the steam cleaning tank. Supply to the steam cleaning zone.
  • the surface coating liquid is a hydrocarbon solvent, terpene solvent, silicone solvent, hydrophilic solvent, water, animal fat or vegetable oil, and has a specific gravity smaller than that of the HFE solvent liquid and has a higher boiling point. Are selectively used in one kind or plural kinds.
  • the present invention is configured as described above, and the upper surface of the HFE solvent liquid is coated with a surface coating liquid formed of a liquid having a lower specific gravity and a higher boiling point than that of the HFE solvent liquid, thereby evaporating the surface coating liquid.
  • a surface coating liquid formed of a liquid having a lower specific gravity and a higher boiling point than that of the HFE solvent liquid, thereby evaporating the surface coating liquid.
  • the HFE solvent liquid condensed into the object to be cleaned by vapor cleaning falls from the object to be cleaned onto the upper surface of the surface coating liquid, but moves from the surface coating liquid side to the HFE solvent liquid side due to the difference in specific gravity with the surface coating liquid.
  • the condensed liquefied liquid is hardly evaporated.
  • the coating with the surface coating liquid can be reliably performed without being affected by manufacturing errors and distortion due to secular change as compared with the case of covering with a lid. Therefore, even if steam cleaning is performed using an expensive HFE solvent, the consumption of the HFE solvent can be made extremely small, so that the HFE solvent can be used repeatedly. As a result, the HFE solvent is used. This makes it possible to perform inexpensive steam cleaning work.
  • the present invention enables inexpensive steam cleaning while using an expensive HFE solvent which is excellent in cleaning performance as well as environmental performance.
  • (1) is a steam cleaning tank, and the bottom is filled with HFE solvent liquid (2).
  • This HFE solvent liquid (2) has an ozone depletion coefficient of 0, a global warming coefficient is lower than that of the above-mentioned fluorine-based solvent, chlorine-based solvent and alternative solvent, and is nonflammable. In some cases, it has excellent properties. Therefore, it is possible to perform a cleaning operation such as steam cleaning without using a pressure resistant tank for decompression.
  • this HFE solvent liquid (2) is expensive, and is about 10 to 30 times more expensive than the above-mentioned fluorine-based solvent, chlorine-based solvent, and alternative solvent. It could not be used easily from the surface.
  • the HFE solvent liquid (2) is cooled by a cooling coil (3) disposed at the bottom of the steam cleaning tank (1).
  • the surface of the HFE solvent liquid (2) is coated with a surface coating liquid (4) formed of a liquid having a specific gravity smaller than that of the HFE solvent liquid (2) and having a high boiling point. Since this coating is not a coating with a solid material such as a lid, but a coating with a liquid, there is no production error, no distortion due to aging, and the surface of the HFE solvent liquid (2). Can be reliably coated and the surface coating liquid (4) evaporates due to this coating, but the HFE solvent liquid (2) does not evaporate or becomes extremely small.
  • the surface coating liquid (4) is a hydrocarbon solvent, a terpene solvent, a silicone solvent, a hydrophilic solvent, water, animal oil, vegetable oil or the like, and is more than the HFE solvent liquid (2).
  • hydrocarbon solvent paraffin solvents, ester solvents, naphthene solvents, aromatic solvents and the like can be used.
  • limonene oil can be used as the terpene solvent
  • silicone oil can be used as the silicone solvent
  • glycol ether solvents, alcohol solvents, and the like can be used as the hydrophilic solvent.
  • the selection can be arbitrarily made according to the purpose of cleaning. For example, if water is selected as the surface coating solution (4), the risk of ignition can be prevented and the surface coating solution (4) can be inexpensive. Can be However, when it is not preferable that water vapor adheres to the surface of the article to be cleaned (5) due to evaporation of water, water and animal fats or vegetable fats and oils are used in combination as the surface coating liquid (4). By forming an oil and fat layer on the surface of water, evaporation of moisture can be prevented, and adhesion of moisture to the object to be cleaned (5) can be prevented.
  • an overflow pipe (6) is arranged on the surface of the surface coating liquid (4), connected to the overflow tank (7), and the oil component separated from the object to be cleaned (5) by steam cleaning of the object to be cleaned (5).
  • the liquid level rises due to, for example, the liquid level flows to the overflow tank (7) to keep the liquid level constant.
  • the upper surface of the surface coating liquid (4) of the steam cleaning tank (1) is used as a steam cleaning zone (8) for the object to be cleaned (5).
  • the supply of steam to the steam cleaning zone (8) is performed in the HFE solvent liquid (2) in the steam generation tank (10) separately formed as shown in FIGS. 1 and 2 adjacent to the steam cleaning tank (1).
  • the HFE solvent liquid (2) is heated to generate cleaning vapor, and this cleaning vapor is supplied through the on-off valve (11).
  • a heater (12) is arranged inside the HFE solvent liquid (2), and a steam retention part (13) is generated on the upper surface of the HFE solvent liquid (2).
  • a partition frame (14) is arranged on the upper surface of the steam cleaning tank (1) through an open / close valve (11) between the partition frame (14) and the HFE solvent liquid (2). 8) is connected.
  • a cooling pipe (15) is wound around the upper surface of the partition frame (14) of the steam generation tank (10) to form a steam condensation zone (16).
  • the HFE solvent liquid (2) in the steam cleaning tank (1) is supplied to the steam cleaning zone (8) through the soot control valve (17), the liquid feed pump (18), the filter (20), and the electromagnetic valve (21). ) Is connected to a shower nozzle (22) arranged on the upper side of the object (5) so that the object to be cleaned (5) can be shower-cleaned.
  • a cooling pipe (23) is wound around the upper part of the steam cleaning zone (8) to form a steam condensation zone (24).
  • the object to be cleaned (5) is moved to the steam cleaning zone (8) of the steam cleaning tank (1) by an appropriate vertical movement mechanism.
  • the liquid feed pump (18) is operated to spray the cooled HFE solvent liquid (2) from the shower nozzle (22) to perform the shower cleaning of the object to be cleaned (5).
  • the HFE solvent liquid (2) sprayed from the shower nozzle (22) by this shower cleaning and contacting the object to be cleaned (5) falls to the surface of the surface coating liquid (4), but the surface coating liquid (4) is HFE.
  • the surface coating liquid (4) passes through the surface coating liquid (4) due to the difference in specific gravity to the HFE solvent liquid (2) side at the bottom of the steam cleaning tank (1). Moving. Therefore, the HFE solvent liquid (2) sprayed from the shower nozzle (22) may come into contact with the outside air and evaporate only while it is located above the surface coating liquid (4). No evaporation occurs after passing through 4).
  • the object to be cleaned (5) that has completed shower cleaning and has been cooled is subjected to steam cleaning.
  • This steam cleaning is performed by introducing cleaning steam from the steam generation tank (10) into the steam cleaning zone (8) by opening the opening / closing valve (11).
  • the object to be cleaned (5) condenses the cleaning steam to perform steam cleaning, and drops the condensed liquefied liquid onto the surface of the surface coating liquid (4).
  • the condensate liquefied liquid of the HFE solvent vapor that has fallen passes through the surface coating liquid (4) due to the difference in specific gravity and passes through the HFE solvent liquid (2 ) Move to the side.
  • the condensed liquefied liquid may evaporate in contact with the outside air only while it is located above the surface coating liquid (4), but it will evaporate after passing through the surface coating liquid (4). It never happens.
  • the object to be cleaned (5) that has completed the steam cleaning is pulled up, dried in the steam condensation zone (24), and then transferred to the outside from the steam cleaning tank (1).
  • the liquid condensed in the vapor condensation zone (24) falls on the surface of the surface coating liquid (4) and passes through the surface coating liquid (4) due to the difference in specific gravity, so that the HFE in the lower bottom of the steam cleaning tank (1). Move to the solvent liquid (2) side.
  • the above shower cleaning is not an essential condition of the present invention, and is arbitrarily selected according to the purpose of cleaning the object to be cleaned (5), and is not necessary for the purpose of cleaning the object to be cleaned (5). May be one in which the object to be cleaned (5) is directly subjected to steam cleaning without performing shower cleaning.
  • the liquid feed pump (18), the filter (20), the shower nozzle (22), and the like are provided to perform the shower cleaning of the object to be cleaned (5).
  • the immersion cleaning tank (25) is formed without the liquid feed pump (18), the filter (20), the shower nozzle (22), etc., and the object to be cleaned is washed in this immersion cleaning tank (25). Steam cleaning is performed after the primary cleaning of the object (5).
  • the cleaning liquid (26) used in the immersion cleaning tank (25) any cleaning liquid according to the cleaning purpose such as a hydrocarbon solvent, a terpene solvent, a silicone solvent, a hydrophilic solvent or the like can be used. Other configurations are the same as those of the first embodiment.
  • HFE solvent liquid was stored in a container, and the evaporation amount of the HFE solvent liquid when the HFE solvent liquid was coated with the surface coating liquid and when the HFE solvent liquid was naturally evaporated without being coated with the surface coating liquid was compared.
  • HFE solvent liquid Novec HFE7200 manufactured by Sumitomo 3M Limited Molecular structure C 4 F 7 OC 2 H 5 Boiling point 76 ° C Density 1.430 g / cm 3
  • Measuring method Sample 1 100 ml of HFE7200 was stored in a 250 ml graduated cylinder and left in a room at room temperature (16 ° C.
  • HFE solvent liquid Novec HFE7200 manufactured by Sumitomo 3M Limited Molecular structure C 4 F 7 OC 2 H 5 Boiling point 76 ° C Density 1.430 g / cm 3
  • Surface coating liquid Hydrocarbon solvent Normal paraffin mainly composed of 11 carbon atoms Boiling point 207 °C Density 0.745g / cm 3
  • Measuring method Sample 3 81.18 g of HFE7200 was placed in a beaker and left in a room at room temperature (16 ° C. to 20 ° C.) without using a surface coating solution.
  • Sample 4 81.18 g of HFE7200 was placed in a beaker, and its surface was covered with a surface coating solution (hydrocarbon solvent 29.59 g) and left in a room at room temperature (16 ° C. to 20 ° C.).
  • the reduction rate of Sample 4 was determined by using the total amount of HFE7200 and the hydrocarbon solvent as the denominator.
  • the hydrocarbon solvent has a lower density than the HFE solvent liquid and reliably covers the surface of the HFE solvent liquid. In this way, when the HFE solvent liquid is sealed with the surface coating liquid (hydrocarbon solvent), the evaporation of the HFE solvent liquid is suppressed, and the evaporation amount becomes extremely small as compared with the case where the coating is not performed.
  • the present invention covers the upper surface of the HFE solvent liquid (2) with the surface coating liquid (4) formed of a liquid having a lower specific gravity and a higher boiling point than that of the HFE solvent liquid (2). Evaporation consumption of the solvent liquid (2) is not generated or can be significantly reduced. For this reason, the HFE solvent liquid (2) stored in the steam cleaning tank (1) does not evaporate or can be significantly reduced even during the steam cleaning operation. Further, it is possible to minimize the evaporation of the HFE solvent liquid (2) that is on standby without performing the steam cleaning operation. Therefore, even if steam cleaning is performed using an expensive HFE solvent liquid (2), the consumption of the HFE solvent liquid (2) can be made extremely small. Therefore, the HFE solvent liquid (2) is repeatedly used. As a result, an inexpensive steam cleaning operation using the HFE solvent (2) is possible. The present invention enables inexpensive steam cleaning while using an expensive HFE solvent which is excellent in cleaning performance as well as environmental performance.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

L'invention permet d'effectuer un travail de nettoyage à la vapeur peu coûteux tout en utilisant un solvant liquide HFE coûteux. Autrement dit, la quantité de solvant liquide HFE coûteux consommée lors du nettoyage à la vapeur est réduite, et le solvant liquide HFE est utilisé plusieurs fois. Cela permet d'effectuer un travail de nettoyage à la vapeur peu coûteux à l'aide d'un solvant liquide HFE. La présente invention permet un nettoyage à la vapeur peu coûteux tout en utilisant un solvant liquide HFE coûteux qui a des performances supérieures en matière de respect de l'environnement et de nettoyage. La surface supérieure d'un solvant liquide HFE (2) est recouverte d'une surface de couverture liquide (4) formée par un liquide ayant une densité inférieure et un point d'ébullition supérieur par rapport au solvant liquide HFE (2). Le nettoyage à la vapeur d'un objet nettoyé (5) est effectué en fournissant la vapeur de nettoyage produite en chauffant le solvant liquide HFE (2) à la surface supérieure de ce liquide de couverture liquide (4) et en condensant et en liquéfiant cette vapeur de nettoyage sur l'objet nettoyé (5).
PCT/JP2011/003732 2010-12-07 2011-06-29 Dispositif de nettoyage à la vapeur pour un objet nettoyé WO2012077254A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-272317 2010-12-07
JP2010272317A JP4771439B1 (ja) 2010-12-07 2010-12-07 被洗浄物の蒸気洗浄装置

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WO2012077254A1 true WO2012077254A1 (fr) 2012-06-14

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TW (1) TW201223651A (fr)
WO (1) WO2012077254A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017000958A (ja) * 2015-06-10 2017-01-05 ジャパン・フィールド株式会社 洗浄装置
CN110756504A (zh) * 2019-10-30 2020-02-07 江苏嵘成电器有限公司 热敏开关清洗方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5065521B1 (ja) * 2011-12-28 2012-11-07 ジャパン・フィールド株式会社 被洗浄物の蒸気洗浄装置
JP6309139B1 (ja) * 2017-05-11 2018-04-11 ジャパン・フィールド株式会社 被洗浄物の洗浄方法及びその装置
JP6246973B1 (ja) * 2017-07-11 2017-12-13 ジャパン・フィールド株式会社 被洗浄物の脱脂及び溶剤除去洗浄方法
CN109454042A (zh) * 2017-09-06 2019-03-12 株式会社富利美 工件清洁装置以及工件清洁方法
JP2020093211A (ja) * 2018-12-12 2020-06-18 株式会社ワールド機工 密閉型洗浄装置
JP6557796B1 (ja) * 2019-02-13 2019-08-07 ジャパン・フィールド株式会社 混合洗浄溶剤を用いた被洗浄物の洗浄方法
JP2020138166A (ja) * 2019-02-28 2020-09-03 セントラル硝子株式会社 含フッ素有機溶剤を用いた洗浄方法、該含フッ素有機溶剤の保存方法、及び回収方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04176378A (ja) * 1990-11-08 1992-06-24 Toshiba Corp 溶剤使用の洗浄機
JPH10192797A (ja) * 1997-01-14 1998-07-28 Du Pont Mitsui Fluorochem Co Ltd 洗浄方法
JP2009189918A (ja) * 2008-02-13 2009-08-27 Kojiro Okawa ２液式洗浄装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04176378A (ja) * 1990-11-08 1992-06-24 Toshiba Corp 溶剤使用の洗浄機
JPH10192797A (ja) * 1997-01-14 1998-07-28 Du Pont Mitsui Fluorochem Co Ltd 洗浄方法
JP2009189918A (ja) * 2008-02-13 2009-08-27 Kojiro Okawa ２液式洗浄装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017000958A (ja) * 2015-06-10 2017-01-05 ジャパン・フィールド株式会社 洗浄装置
CN110756504A (zh) * 2019-10-30 2020-02-07 江苏嵘成电器有限公司 热敏开关清洗方法

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Publication number Publication date
JP2012120958A (ja) 2012-06-28
TW201223651A (en) 2012-06-16
JP4771439B1 (ja) 2011-09-14

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