US3739979A - Fluidic counter device - Google Patents
Fluidic counter device Download PDFInfo
- Publication number
- US3739979A US3739979A US3739979DA US3739979A US 3739979 A US3739979 A US 3739979A US 3739979D A US3739979D A US 3739979DA US 3739979 A US3739979 A US 3739979A
- Authority
- US
- United States
- Prior art keywords
- flow
- counter device
- inlet opening
- junction
- loop passage
- 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.)
- Expired - Lifetime
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-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/12—Design features of general application for actuating the drive by fluid means
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/2229—Device including passages having V over T configuration
- Y10T137/224—With particular characteristics of control input
Definitions
- the present invention relates to an improved fluidic counter and, more particularly a fluidic counter device having more stable characteristics.
- Fluidic counter devices have been used for providing two alternate outputs with one input, and a binary scale fluidic counter device can be made by connecting a number of the fluidic counter devices together.
- a conventional fluidic counter device has been unstable in operation and difficult to manufacture, because the device must be provided with an accurately formed throttle in the passages in order to generate a properly circulating flow.
- the object of the invention is to provide an improved fluidic counter device of more stable characteristics, which can be operated by air.
- Another object of the invention is to provide a new fluidic counter device in which the described disadvantages of the prior art are removed.
- a still further object of the invention is to provide an improved fluidic counter device in which an accurate circulating control fluid flow is obtainable and the circulating control fluid flow can be exactly reversed, so that more accurate change operations are obtainable, together with comparison with a conventional device.
- FIG. 1 illustrates a plan view of a pneumatic or hydraulic fluidic counter device according to the prior art.
- FIG. 2 illustrates a plan of a fluidic counter device according to this invention.
- a pressurized medium is introduced from an inlet 1 and passes through along either wall 2 to the right output or wall 3 tothe left output.
- a small amount of the pressurized medium will flow through passage forming an auxiliary flow pattern.
- the passages for the auxiliary flow are formed in the shape of a heart and when the main flow is through passage 2 the auxiliary circular flow is in anti-clockwise direction as shown in an FIG. I by virtue of the reduced pressure in 4 as the pressurized medium flows past said passages.
- the auxiliary circular flow is not strong enough to change the flow direction of the main flow pattern from the side 2 to side 3.
- an opening 12 for introducing a slightly pressurized control bias fluid into said device is connected with a heart-shaped control input passages 10, 1 l and said passages introduces the slightly pressurized control bias fluid from said opening 12 into the auxiliary circulating flow.
- the opening 12 is also connected with suction openings 13, 14 for control.
- These openings 13, 14 provide an assisting flow in the form of a suction stream to change the direction of the circulating flow of the slightly pressurized control bias fluid introduced into said heart-shaped control input passages.
- the control pulse signal is also introduced into input 12.
- An inlet 7 provides the main fluid flow into the fluidic counter device, and is connected with output passages 8, 9 as well as the circulating flow passages 10, 11 at the junction joining the opening 7 with the output passages 8, 9.
- a slight flow Ps is introduced through an opening 12.
- a control signal in the form of a pulse is provided through the opening 12 for control signals, it follows the circulating flow in an anticlockwise direction in the heart-shaped passages. Where the main flow is applied through the opening 7, this main flow, by means of the action of said circulating flow, is biased to the left side wall.
- the control pulse having a greater pressure than the slight flow Ps produces a greater suction at the suction tube 13.
- the suction force causes environmental air to flow through the tube 13 toward the junction with 12.
- the air sucked in through 13 will cause the circulating flow in the heart-shaped chambers to reverse direction.
- the directional change of the main flow from the opening 7 can be attainable by the change of the circulating flow within the heartshaped passages, and besides, the direction of the circulating flow 7 through the heart-shaped passages is changed by the pressure reduction from the pulse flow from the opening 12 utilizing of a suction flow from the passage 13 or 14 on the suction contiguous side. Therefore, less circulating flow is effective enough and thus can be accurately reversed, so that more accurate change operations are obtainable.
- a fluidic counter device comprising:
- a single control inlet opening communicating with said loop passage at a junction for applying a continuous low pressure bias flow to maintain a continuous flow within said loop passage and an intermittent high pressure control pulse to the loop passage the loop passage and the single control pulse inlet to direct the medium flow; and opening and having a flow of environmental fluid e. a pair of suction ports leading from the environonly into the junction.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The present invention is to provide an improved fluidic counter device, wherein, instead of conventional devices a pair of suction openings is newly employed at the junction, so that more stable characteristics are obtainable.
Description
United States Patent 1 1 Hanada et a1.
1 1 FLUlDlC COUNTER DEVICE I [75] Inventors: KeiichiHanada;Kimihiko Saito;-
' Akikazu Iwase, all of Tokyo, Japan [73 Assignee: Meidensha Electric Mf fco. Ltd., Tokyo, Japan 1 22 Filed: Mar. 22,19'71 21 Appl. No.: 126,665
[30] ForeignApplication Priority Data 11 3,739,979 June 19, 1973 [56] References Cited UNITED STATES PATENTS 3,562,507 2/1971 Kantola 235/201 PF 3,339,569 9/1967 3,114,390 12/1963 3,193,197 7/1965 Bauer 235/201 Primary ExaminerStephen J. Tomsky Assistant Examiner-Lawrence R. Franklin AttorneyClario Ceccon [5 7] ABSTRACT The present invention is to provide an improved fluidic counter device, wherein, instead of conventional devices a pair of suction openings is newly employed at the junction, so that more stable characteristics are obtainable. 1
1 Claim, 2 Drawing Figures Fl G. 1
PRIOR ART FIG. 2
FLUIDIC COUNTER DEVICE The present invention relates to an improved fluidic counter and, more particularly a fluidic counter device having more stable characteristics.
Fluidic counter devices have been used for providing two alternate outputs with one input, and a binary scale fluidic counter device can be made by connecting a number of the fluidic counter devices together.
A conventional fluidic counter device has been unstable in operation and difficult to manufacture, because the device must be provided with an accurately formed throttle in the passages in order to generate a properly circulating flow.
Therefore, the object of the invention is to provide an improved fluidic counter device of more stable characteristics, which can be operated by air. Another object of the invention is to provide a new fluidic counter device in which the described disadvantages of the prior art are removed.
A still further object of the invention is to provide an improved fluidic counter device in which an accurate circulating control fluid flow is obtainable and the circulating control fluid flow can be exactly reversed, so that more accurate change operations are obtainable, together with comparison with a conventional device.
Now, this invention will be better understood in the following explanations in reference to accompanied drawings.
In the drawing FIG. 1 illustrates a plan view of a pneumatic or hydraulic fluidic counter device according to the prior art.
FIG. 2 illustrates a plan of a fluidic counter device according to this invention.
In the conventional pneumatic or hydraulic counter device, shown in FIG. 1 a pressurized medium is introduced from an inlet 1 and passes through along either wall 2 to the right output or wall 3 tothe left output. A small amount of the pressurized medium will flow through passage forming an auxiliary flow pattern. The passages for the auxiliary flow are formed in the shape of a heart and when the main flow is through passage 2 the auxiliary circular flow is in anti-clockwise direction as shown in an FIG. I by virtue of the reduced pressure in 4 as the pressurized medium flows past said passages. In this case, the auxiliary circular flow is not strong enough to change the flow direction of the main flow pattern from the side 2 to side 3.
If a short control pulse is introduced from the opening 6, the control pulse flow is guided in the circulating path by the auxiliary flow. With a greater pressure now generated within the control input 4, said pressure causes the pressurized medium flow to change the flow direction to the left wall 3. After the switching of the main flow to wall 3, the reduced pressure will take place in 5, and accordingly, in the heart-shaped passages the direction of circulating flow of the auxiliary flow is reversed. However, if a new control pulse flow is supplied from the opening 6, the pressurized medium flow return back to the previous position again. The above mentioned conventional fluidic counter device is inaccurate in operation since it is dependent on accurately dimensioned parts.
Referring to FIG. 2, there is shown the details of the present invention. In the fluidic counter device according to this invention, an opening 12 for introducing a slightly pressurized control bias fluid into said device, is connected with a heart-shaped control input passages 10, 1 l and said passages introduces the slightly pressurized control bias fluid from said opening 12 into the auxiliary circulating flow. At the junction joining the opening 12 with the passages 10, 11, the opening 12 is also connected with suction openings 13, 14 for control. These openings 13, 14 provide an assisting flow in the form of a suction stream to change the direction of the circulating flow of the slightly pressurized control bias fluid introduced into said heart-shaped control input passages. The control pulse signal is also introduced into input 12. An inlet 7 provides the main fluid flow into the fluidic counter device, and is connected with output passages 8, 9 as well as the circulating flow passages 10, 11 at the junction joining the opening 7 with the output passages 8, 9.
In operation, a slight flow Ps is introduced through an opening 12. When a control signal in the form of a pulse is provided through the opening 12 for control signals, it follows the circulating flow in an anticlockwise direction in the heart-shaped passages. Where the main flow is applied through the opening 7, this main flow, by means of the action of said circulating flow, is biased to the left side wall.
When the control pulse is applied the following phenomena happens. That is, where the pressure of the applied control pulse flow is greater than the slight flow pressure the pressure at the opening 13 is reduced, the circulating flow within the heart-shaped passages is reversed and moved clockwise by virtue of lower pressure vortex caused by the contiguity of the flow of the environmental air through the suction port 13.
The control pulse having a greater pressure than the slight flow Ps produces a greater suction at the suction tube 13. As the pulse proceeds along 10, the suction force causes environmental air to flow through the tube 13 toward the junction with 12. When the slight flow Ps continues, the air sucked in through 13 will cause the circulating flow in the heart-shaped chambers to reverse direction.
In the fluidic counter device according to this invention, in comparison with the known device according to the prior art shown in FIG. 1, the directional change of the main flow from the opening 7 can be attainable by the change of the circulating flow within the heartshaped passages, and besides, the direction of the circulating flow 7 through the heart-shaped passages is changed by the pressure reduction from the pulse flow from the opening 12 utilizing of a suction flow from the passage 13 or 14 on the suction contiguous side. Therefore, less circulating flow is effective enough and thus can be accurately reversed, so that more accurate change operations are obtainable.
We claim: I
l. A fluidic counter device comprising:
a. a pressure medium inlet opening;
b. at least two outlet passages communicating with the pressure medium inlet opening;
0. a loop passage communicating with said pressure medium inlet opening so as to direct said pressure medium to flow into one of the outlet passages;
d. a single control inlet opening communicating with said loop passage at a junction for applying a continuous low pressure bias flow to maintain a continuous flow within said loop passage and an intermittent high pressure control pulse to the loop passage the loop passage and the single control pulse inlet to direct the medium flow; and opening and having a flow of environmental fluid e. a pair of suction ports leading from the environonly into the junction.
ment in opposite directions to the junction between
Claims (1)
1. A fluidic counter device comprising: a. a pressure medium inlet opening; b. at least two outlet passages communicating with the pressure medium inlet opening; c. a loop passage communicating with said pressure medium inlet opening so as to direct said pressure medium to flow into one of the outlet passages; d. a single control inlet opening communicating with said loop passage at a junction for applying a continuous low pressure bias flow to maintain a continuous flow within said loop passage and an intermittent high pressure control pulse to the loop passage to direct the medium flow; and e. a pair of suction ports leading from the environment in opposite directions to the junction between the loop passage and the single control pulse inlet opening and having a flow of environmental fluid only into the junction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2359570A JPS491919B1 (en) | 1970-03-23 | 1970-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3739979A true US3739979A (en) | 1973-06-19 |
Family
ID=12114928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3739979D Expired - Lifetime US3739979A (en) | 1970-03-23 | 1971-03-22 | Fluidic counter device |
Country Status (2)
Country | Link |
---|---|
US (1) | US3739979A (en) |
JP (1) | JPS491919B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276943A (en) * | 1979-09-25 | 1981-07-07 | The United States Of America As Represented By The Secretary Of The Army | Fluidic pulser |
US20130291981A1 (en) * | 2010-09-27 | 2013-11-07 | Airbus Operations Gmbh | Fluid actuator for influencing the flow along a flow surface, as well as blow-out device and flow body comprising a like fluid actuator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114390A (en) * | 1961-02-03 | 1963-12-17 | Ibm | Fluid devices for computors |
US3193197A (en) * | 1962-04-23 | 1965-07-06 | Sperry Rand Corp | Binary counter stages having two fluid vortex amplifiers |
US3339569A (en) * | 1964-05-08 | 1967-09-05 | Sperry Rand Corp | Presettable decoder |
US3562507A (en) * | 1968-11-27 | 1971-02-09 | Gen Electric | Pure fluid shift register |
-
1970
- 1970-03-23 JP JP2359570A patent/JPS491919B1/ja active Pending
-
1971
- 1971-03-22 US US3739979D patent/US3739979A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114390A (en) * | 1961-02-03 | 1963-12-17 | Ibm | Fluid devices for computors |
US3193197A (en) * | 1962-04-23 | 1965-07-06 | Sperry Rand Corp | Binary counter stages having two fluid vortex amplifiers |
US3339569A (en) * | 1964-05-08 | 1967-09-05 | Sperry Rand Corp | Presettable decoder |
US3562507A (en) * | 1968-11-27 | 1971-02-09 | Gen Electric | Pure fluid shift register |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276943A (en) * | 1979-09-25 | 1981-07-07 | The United States Of America As Represented By The Secretary Of The Army | Fluidic pulser |
US20130291981A1 (en) * | 2010-09-27 | 2013-11-07 | Airbus Operations Gmbh | Fluid actuator for influencing the flow along a flow surface, as well as blow-out device and flow body comprising a like fluid actuator |
US9976580B2 (en) * | 2010-09-27 | 2018-05-22 | Airbus Operations Gmbh | Fluid actuator for influencing the flow along a flow surface, as well as blow-out device and flow body comprising a like fluid actuator |
Also Published As
Publication number | Publication date |
---|---|
JPS491919B1 (en) | 1974-01-17 |
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