EP0450222A2 - Dispositif de nettoyage ultrasonique - Google Patents

Dispositif de nettoyage ultrasonique Download PDF

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Publication number
EP0450222A2
EP0450222A2 EP90308705A EP90308705A EP0450222A2 EP 0450222 A2 EP0450222 A2 EP 0450222A2 EP 90308705 A EP90308705 A EP 90308705A EP 90308705 A EP90308705 A EP 90308705A EP 0450222 A2 EP0450222 A2 EP 0450222A2
Authority
EP
European Patent Office
Prior art keywords
washing liquid
deaerated
nondeaerated
liquid
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90308705A
Other languages
German (de)
English (en)
Other versions
EP0450222B1 (fr
EP0450222A3 (en
Inventor
Shibano C/O S & C Co Ltd Yoshihide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S and C Co Ltd
Original Assignee
S and C Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by S and C Co Ltd filed Critical S and C Co Ltd
Publication of EP0450222A2 publication Critical patent/EP0450222A2/fr
Publication of EP0450222A3 publication Critical patent/EP0450222A3/en
Application granted granted Critical
Publication of EP0450222B1 publication Critical patent/EP0450222B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0288—Ultra or megasonic jets

Definitions

  • This invention relates to spray type ultrasonic washing apparatus, and more particularly to such apparatus using deaerated washing liquid and provided with means for keeping such liquid in good deaerated condition while being sprayed towards a surface to be washed.
  • Ultrasonic washing apparatus is widely used for washing work surfaces, deflashing work surfaces, and the like.
  • Cavitation has hitherto been supposed to be most easily formed in an ultrasonically treated liquid which is abundant in air bubbles. Experiments we have performed have however revealed that, on the contrary, cavitation can be more easily formed in a deaerated liquid. This is because air bubbles in a nondeaerated liquid absorb the energy of cavitation, thereby suppressing the formation of cavitation.
  • ultrasonic radiation is applied to a deaerated liquid, a drastic pressure decrease will be caused under certain conditions, and when the pressure of the deaerated liquid is reduced below saturated vapour pressure, the liquid will be evaporated to form air bubbles, which will rapidly expand to form cavities. Then the cavities will be compressed to cause very high pressure, thereby expediting the formation of cavitation.
  • This ultrasonic washing has the effect of reducing the time involved in washing surfaces because, as explained above, the use of deaerated liquid permits effective formation of cavitation.
  • Use of deaerated liquid in the form of a spray tends to permit invasion of air into the deaerated liquid while it is being sprayed towards the surface to be washed. As a consequence the liquid does not remain deaerated, and the washing effect decreases with the resulting decrease of cavitation.
  • spray type ultrasonic washing apparatus in which ultrasonic radiation is applied to washing liquid to be sprayed on a surface to be washed, so as to cause cavitation in the washing liquid
  • the apparatus comprising a washing liquid nozzle assembly comprising an inner nozzle defining a passage for deaerated washing liquid, and an outer nozzle surrounding said inner nozzle to define an annular passage for nondearerated washing liquid, so that nondeaerated washing liquid envelopes the deaerated washing liquid expelled from the nozzle in use, and a vibratory element for applying ultrasonic radiation to the deaerated washing liquid.
  • a spray type ultrasonic washing apparatus comprises a nozzle assembly 1 and a vibrating element 9.
  • the nozzle assembly 1 comprises an outer nozzle 2 and an inner nozzle 3, each in the form of a conical frustum.
  • the inner nozzle 3 defines a passage 8 through which deaerated liquid is made to flow before being sprayed.
  • An annular passage 7, through which nondeaerated liquid is made to flow, is formed between the outer and inner nozzles 2 and 3.
  • the nozzle assembly 1 is tapered towards the nozzle tip 4.
  • a vessel 16 contains washing liquid in nondeaerated form.
  • the vessel 16 is connected to the inlet 5 of the nozzle assembly 1 via a pump 15a.
  • the vessel 16 is connected to the inlet 6 of the nozzle assembly 1 via deaerating means 17 and a pump 15b.
  • nondeaerated washing liquid 12 is supplied to the inlet 5 of the nozzle assembly 1
  • deaerated washing liquid 11 is supplied to the inlet 6.
  • the deaerating means 17 may be constructed that the liquid may be boiled and deaerated.
  • nondeaerated washing liquid 12 is made to flow to the nozzle tip 4 through the passage 7, whilst deaerated washing liquid 11 is made to flow to the nozzle tip 4 through the passage 8.
  • the deaerated washing liquid 11 is encircled by nondeaerated washing liquid 12, and the deaerated and nondeaerated washing liquids are sprayed onto a surface 13 to be washed.
  • the temperature T A of the nondeaerated washing liquid is set to be substantially higher than the temperature T B of the deaerated washing liquid, by heating the nondeaerated liquid and cooling the deaerated liquid.
  • the flow rate V A of the nondeaerated washing liquid is set to be substantially higher than the flow rate V B of the deaerated washing liquid.
  • the vibrating element 9 is connected to a power supply 18, thereby putting its vibrating piece 10 into operation.
  • ultrasound is radiated through the deaerated washing liquid 11 in the inner passage 8 of the nozzle assembly 1. Cavitation is formed, and the surface 13 is washed efficiently.
  • washing liquid After washing the surface 13, the washing liquid is collected in a vessel 14, which is placed below the surface to be washed. In the vessel 14, deaerated washing liquid and aerated washing liquid are mixed together, and also air becomes mixed therewith. Thus, nondeaerated washing liquid results, which is then returned to the vessel 16 via a pump 15c.
  • the temperature of the nondeaerated washing liquid is set to be higher than that of the deaerated washing liquid. This temperature difference provides a further barrier against invasion of air from the surrounding nondeaerated washing liquid into the deaerated washing liquid, even if air enters the enclosing nondeaerated washing liquid from the surrounding atmosphere. This further enhances the effective formation of cavitation in the deaerated washing liquid by preventing invasion of air into the same.
  • the flow rate of the deaerated washing liquid 11 is set to be substantially lower than that of nondeaerated washing liquid 12. This is advantageous to the operation of spraying the deaerated and nondeaerated washing liquid in combination.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
  • Special Spraying Apparatus (AREA)
EP90308705A 1990-04-03 1990-08-08 Dispositif de nettoyage ultrasonique Expired - Lifetime EP0450222B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2088560A JPH03288581A (ja) 1990-04-03 1990-04-03 スプレー式超音波洗浄装置
JP88560/90 1990-04-03

Publications (3)

Publication Number Publication Date
EP0450222A2 true EP0450222A2 (fr) 1991-10-09
EP0450222A3 EP0450222A3 (en) 1992-07-29
EP0450222B1 EP0450222B1 (fr) 1995-11-29

Family

ID=13946256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90308705A Expired - Lifetime EP0450222B1 (fr) 1990-04-03 1990-08-08 Dispositif de nettoyage ultrasonique

Country Status (4)

Country Link
EP (1) EP0450222B1 (fr)
JP (1) JPH03288581A (fr)
AT (1) ATE130786T1 (fr)
DE (1) DE69023897T2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675525A1 (fr) * 1994-03-22 1995-10-04 Shin-Etsu Handotai Company Limited Dispositif de traitement des substrats
CN105834165A (zh) * 2016-05-06 2016-08-10 苏州工业园区海纳科技有限公司 一种带负压吸收的超声清洗装置
CN107876230A (zh) * 2017-11-29 2018-04-06 九牧厨卫股份有限公司 一种摆动水出水芯及出水装置
CN109420986A (zh) * 2017-08-31 2019-03-05 波音公司 便携式空化喷丸方法和装置
EP3450103A1 (fr) * 2017-08-31 2019-03-06 The Boeing Company Procédé de grenaillage de cavitation portable
US10836012B2 (en) 2017-08-31 2020-11-17 The Boeing Company Method and apparatus for fluid cavitation abrasive surface finishing
US11679454B2 (en) 2017-08-31 2023-06-20 The Boeing Company Portable cavitation peening method and apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW212146B (en) * 1992-05-25 1993-09-01 Yoshihide Shibano Supersonic waves washing method
DE102015211318A1 (de) * 2015-06-19 2016-12-22 Krones Ag Verfahren zum Reinigen von Behältern und/oder Behältergebinden und Reinigungsvorrichtung
CN105057250B (zh) * 2015-08-07 2017-03-15 河海大学常州校区 换能器嵌入式强化空化射流清洗装置
CN112275463A (zh) * 2020-10-16 2021-01-29 哈尔滨工程大学 一种新型自激振荡脉冲空化喷嘴

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2018626A (en) * 1978-04-18 1979-10-24 Kaercher Gmbh & Co Alfred Apparatus for spraying lime- liquid
EP0140505A1 (fr) * 1983-08-15 1985-05-08 Generale de Mecanique et Thermique Procédé de nettoyage d'éléments industriels et système de jet pour la mise en oeuvre de ce procédé
DE3916446A1 (de) * 1988-06-14 1990-03-15 Autobahnbaukombinat Veb Verfahren und vorrichtung zur bearbeitung von festen stoffen mittels druckwasserstrahl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2018626A (en) * 1978-04-18 1979-10-24 Kaercher Gmbh & Co Alfred Apparatus for spraying lime- liquid
EP0140505A1 (fr) * 1983-08-15 1985-05-08 Generale de Mecanique et Thermique Procédé de nettoyage d'éléments industriels et système de jet pour la mise en oeuvre de ce procédé
DE3916446A1 (de) * 1988-06-14 1990-03-15 Autobahnbaukombinat Veb Verfahren und vorrichtung zur bearbeitung von festen stoffen mittels druckwasserstrahl

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675525A1 (fr) * 1994-03-22 1995-10-04 Shin-Etsu Handotai Company Limited Dispositif de traitement des substrats
CN105834165A (zh) * 2016-05-06 2016-08-10 苏州工业园区海纳科技有限公司 一种带负压吸收的超声清洗装置
CN109420986A (zh) * 2017-08-31 2019-03-05 波音公司 便携式空化喷丸方法和装置
CN109420987A (zh) * 2017-08-31 2019-03-05 波音公司 便携式空化喷丸方法和装置
EP3450105A1 (fr) * 2017-08-31 2019-03-06 The Boeing Company Appareil de grenaillage par cavitation portatif
EP3450103A1 (fr) * 2017-08-31 2019-03-06 The Boeing Company Procédé de grenaillage de cavitation portable
US10836012B2 (en) 2017-08-31 2020-11-17 The Boeing Company Method and apparatus for fluid cavitation abrasive surface finishing
CN109420986B (zh) * 2017-08-31 2022-08-02 波音公司 便携式空化喷丸方法和装置
US11679454B2 (en) 2017-08-31 2023-06-20 The Boeing Company Portable cavitation peening method and apparatus
CN107876230A (zh) * 2017-11-29 2018-04-06 九牧厨卫股份有限公司 一种摆动水出水芯及出水装置

Also Published As

Publication number Publication date
DE69023897D1 (de) 1996-01-11
EP0450222B1 (fr) 1995-11-29
EP0450222A3 (en) 1992-07-29
JPH03288581A (ja) 1991-12-18
ATE130786T1 (de) 1995-12-15
DE69023897T2 (de) 1996-04-18
JPH0536114B2 (fr) 1993-05-28

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