EP0438599A1 - Buse de projection d'un jet de fluide autovibrant - Google Patents
Buse de projection d'un jet de fluide autovibrant Download PDFInfo
- Publication number
- EP0438599A1 EP0438599A1 EP90911712A EP90911712A EP0438599A1 EP 0438599 A1 EP0438599 A1 EP 0438599A1 EP 90911712 A EP90911712 A EP 90911712A EP 90911712 A EP90911712 A EP 90911712A EP 0438599 A1 EP0438599 A1 EP 0438599A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- jet stream
- self
- stream
- claw
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
-
- 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
- B08B3/02—Cleaning by the force of jets or sprays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C1/00—Circuit elements having no moving parts
- F15C1/22—Oscillators
Definitions
- This invention relates to a nozzle for jetting a self-vibratory fluid stream, and more particularly to a nozzle for jetting without moving parts a self-vibratory fluid stream, provided with a rounded portion or a straight linear part rounded at an output port or provided with a output port with an inwardly curved cross-section so that flowing efficiency is raised.
- Conventional water spraying devices include a device such as a watering can with a system for directly jetting water through a plurality of pores and a device such as a sprinkler or the like for spraying water with a system mechanically moving a jetting nozzle.
- 50-6644 etc. has a system comprising a main nozzle for forming a jet stream in a jetting nozzle, side walls for producing eddies on the right and left sides of the jet stream, and claw-like portions contiguous to the side walls for dividing and dispersing the jet stream, so as to induce the jet stream to curve to create self-vibration by means of the difference in the right and left eddies generated between the side walls and the jet stream, and to disperse the jet stream with the claw-like portions for spraying the fluid over a wide range.
- the device such as a watering can with the system for directly jetting water through a plurality of pores,exhibits some defects that the pores are inclined to become plugged with dust and the trajectory of the jet stream is short because of a large flowing resistance or the like.
- the device such as a sprinkler with the system mechanically moving a jetting nozzle, shows some defects that mechanically moving parts are damaged and production costs are high because of the complicated structure or the like.
- the water spraying device with a self-vibration system disclosed in Japanese Patent Publication No. 49-1916 and Japanese Patent Publication No. 50-6644 etc. exhibits some defects that an energy loss is largely produced by the impingement of the jet stream against the claw-like portions of the output port and the characteristics of the claw-like portion changed by wear or the like.
- An object of the invention is to provide a jetting nozzle which can stably produce a high-frequency self-vibration by a jet stream from a main nozzle, and in which flowing loss is small and variation in characteristics resulting from wear is small.
- a first invention of a self-vibratory fluid stream jetting nozzle according to the present invention is characterized in that a output port is provided with a claw-like portion rounded or provided with a straight linear part rounded so that flowing efficiency is raised with flowing loss reduced and variation in characteristics resulting from wear is prevented, and regarding a second invention, is characterized in that a cross-section of a output port is curved inwardly so that flowing efficiency is raised with flowing loss reduced and variation in characteristics resulting from wear is prevented in the same way as in the first invention.
- characteristics are defined as the angle of the water spraying, the distribution of water spraying and the flowing characteristics or the like.
- the self-vibratory stream jetting nozzle is a output port provided with a claw-like portion rounded or provided with a straight linear part rounded at the end thereof so that exfoliation and contraction are restrained, flowing loss is reduced and adhesive action is increased to increase the angle of water spraying, as compared with the output port of the conventional self-vibratory stream jetting nozzle having an acute claw-like portion and a straight linear part contiguous thereto. Moreover, a stable vibration can continue over a long period because variations resulting from wear are prevented.
- the self-vibratory stream jetting nozzle is provided with a output port having a portions ranging from a claw-like portion to a straight linear part curved inwardly in the cross-section thereof so that the flowing loss can also be similarly reduced to increase the volume of flow.
- the two systems above are combined to provide an output port with claw-like portions rounded or provided with straight linear parts rounded and curved inwardly in cross-section so that the above effects are intensified.
- Fig. 1 is an exploded perspective view of an embodiment of the first invention according to a self-vibratory fluid stream jetting nozzle of the present invention
- Fig. 2 is a front view of the assembled nozzle
- Fig. 3 is an exploded perspective view of another embodiment of the first invention
- Fig. 4 is a front view of the assembled nozzle
- Fig. 5 (a), (b) are an assembled view and a sectional view taken along the line b-b' of the second invention.
- Fig. 1 is an exploded perspective view of an embodiment of the first invention
- Fig. 2 is a front view of the assembled self-vibratory fluid stream jetting nozzle.
- the device comprising, in combination; a plate C having a feeding port 1; a plate B comprising a main nozzle 2 for forming a jet stream connected to the feeding port 1, an air chamber defined by right and left walls 3, 3' and connected with the main nozzle 2, an output port 5 provided with right and left claw-like portions 4, 4' rounded on a radius R and leading to the walls 3, 3'; and a plate A with air ports 6, 6'.
- Fig. 3 is an exploded perspective view of another embodiment of the first invention
- Fig. 4 is a front view of the assembled nozzle, wherein right and left claw-like portions 4, 4' are rounded on a radius R and straight linear ports 7, 7' respectively lead to the claw-like portions 4, 4', and end parts leading to the straight linear parts 7, 7' are respectively rounded on a radius R.
- the claw-like portions 4, 4' are not acute, but rounded on a radius R so that flowing efficiency is raised with flowing loss reduced.
- the characteristics as the spray angle, the distribution of the water spraying and the flowing characteristics or the like are largely changed resulting from wear, but when the claw-like portions are initially rounded, the claw-like portions do not appreciably change from wear, therefore these characteristics are not significantly changed.
- Fig. 5(a) is an assembled view of an embodiment of the second invention
- Fig. 5(b) is a sectional view taken along line b-b in Fig. 5(a).
- the cross-sections of the portions from the claw-like portions 4, 4' to the straight liner parts 7, 7' at the outside thereof in the output port 5 are curved inwardly. In this case, the flowing efficiency is raised with flowing loss reduced and characteristics are not changed from wear.
- first invention and the second invention may be combined to provide claw-like portions rounded and curved inwardly in cross-section so that these effects are even more outstanding.
- the self-vibratory fluid stream jetting nozzle of the present invention achieves the following effects by providing the output port of the self-vibratory fluid stream jetting nozzle with the claw-like portions rounded or straight linear parts rounded at the end thereof and the output port curved inwardly in cross-section.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Cleaning In General (AREA)
- Special Spraying Apparatus (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP209615/89 | 1989-08-15 | ||
JP1209615A JPH0661486B2 (ja) | 1989-08-15 | 1989-08-15 | 自己発振型噴射ノズル |
PCT/JP1990/000994 WO1991002594A1 (fr) | 1989-08-15 | 1990-08-03 | Buse de projection de jets de fluide autovibrants se caracterisant par une efficacite de nettoyage elevee grace a la variation de la forme de l'orifice de sortie du jet |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0438599A1 true EP0438599A1 (fr) | 1991-07-31 |
EP0438599A4 EP0438599A4 (en) | 1992-04-08 |
EP0438599B1 EP0438599B1 (fr) | 1995-03-08 |
Family
ID=16575732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90911712A Expired - Lifetime EP0438599B1 (fr) | 1989-08-15 | 1990-08-03 | Buse de projection d'un jet de fluide autovibrant |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0438599B1 (fr) |
JP (1) | JPH0661486B2 (fr) |
DE (1) | DE69017645T2 (fr) |
DK (1) | DK0438599T3 (fr) |
WO (1) | WO1991002594A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4920233B2 (ja) * | 2005-10-12 | 2012-04-18 | シヤチハタ株式会社 | 押印装置 |
JP4952143B2 (ja) * | 2006-08-24 | 2012-06-13 | パナソニック株式会社 | 手乾燥装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210283A (en) * | 1978-09-11 | 1980-07-01 | Bowles Fluidics Corp | Dual pattern windshield washer nozzle |
EP0197346A2 (fr) * | 1985-03-27 | 1986-10-15 | Bowles Fluidics Corporation | Dégivreur à jet d'air |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621471Y2 (fr) * | 1976-06-01 | 1981-05-21 | ||
JPS6135866A (ja) * | 1984-07-27 | 1986-02-20 | Nippon Soken Inc | 自己発振型流体散布素子 |
JPH0810003B2 (ja) * | 1987-01-07 | 1996-01-31 | 松下電器産業株式会社 | 流体発振素子 |
-
1989
- 1989-08-15 JP JP1209615A patent/JPH0661486B2/ja not_active Expired - Lifetime
-
1990
- 1990-08-03 DK DK90911712T patent/DK0438599T3/da active
- 1990-08-03 DE DE69017645T patent/DE69017645T2/de not_active Expired - Fee Related
- 1990-08-03 EP EP90911712A patent/EP0438599B1/fr not_active Expired - Lifetime
- 1990-08-03 WO PCT/JP1990/000994 patent/WO1991002594A1/fr active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210283A (en) * | 1978-09-11 | 1980-07-01 | Bowles Fluidics Corp | Dual pattern windshield washer nozzle |
EP0197346A2 (fr) * | 1985-03-27 | 1986-10-15 | Bowles Fluidics Corporation | Dégivreur à jet d'air |
Non-Patent Citations (1)
Title |
---|
See also references of WO9102594A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH0377660A (ja) | 1991-04-03 |
EP0438599B1 (fr) | 1995-03-08 |
DE69017645D1 (de) | 1995-04-13 |
DE69017645T2 (de) | 1995-07-06 |
JPH0661486B2 (ja) | 1994-08-17 |
WO1991002594A1 (fr) | 1991-03-07 |
EP0438599A4 (en) | 1992-04-08 |
DK0438599T3 (da) | 1995-07-24 |
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