TWI267616B - Double-acting device for generating synthetic jets - Google Patents

Abstract

A double-acting device for generating synthetic jets, especially for generating non-zero-net-mass-flux synthetic jets, is provided. The double-acting device includes a chamber, which provides a cavity for a fluid working; a separating device configured to bisect the chamber into two sub-chambers, a controlling system connected to the chamber for controlling the separating device to drive the separating device to act periodically, an input system connected to the chamber for making the fluid input to the chamber, and an output system connected to the chamber for making the fluid output therefrom. Due to the periodic oscillation of the separating device and the specific arrangement of the input system and the output system, a train of individual vortex is puffed and a periodic fluid of non-zero-net-mass-flux synthetic jets is generated accordingly.

Description

1267616 V. INSTRUCTION DESCRIPTION α) -- [Technical Field to Be Invented by the Invention] The present invention relates to an actuating device for synthesizing jets, in particular, for use in fluid mixing (four), flow field control, and cooling systems. An invention relating to an actuator for synthesizing a jetted fluid. [Prior Art] Synthetic Jets refers to a working fluid that is pushed and pulled by the action and action of the designed injection actuation system when passing through the injection orifice of an injection actuation system. Oscillating, the resulting periodic jet of fluid. During the entire reciprocating action and action, the working fluid will be cyclically sucked or ejected due to pressure changes within the injection actuation system due to the working fluid being drawn into the injection actuation system and the ejected injection actuation system. The mass flux of the working fluid is the same, resulting in the net mass flux of the injection actuation system in each injection cycle is zero, so the synthetic jet is also known as the zero net mass flux jet in the early stage ( Zer〇-Net-Mass-Flux This type of fluid nozzle is also known as Sucking Blowing, Unsteady Bleeding, or Oscillatory Blowing. ^ The above synthetic jets with zero net mass flux are produced by Zero-Net-Mass-Flux Actuators. In terms of structure, the injection actuator has many configurations; % refers to the first diagram (a), which is a schematic diagram of a conventional zero-purity flux injection actuator. A typical spray actuator 丨 includes an outer wall 1 and a closed chamber 10 surrounded by the outer wall 11 ′, the chamber

Page 10 1267616 V. INSTRUCTIONS (2) 10, one of the outer walls 11 and one or more of the jet elements 115/: such as: t hole 113, with or a required mechanical; Pushing the way the actuator piece 12' can be supplied, so that the piece 5: mode supply, ❿ according to mechanical type, electrostatic type 夂 Π Π double type electric V Λ type / pressure Λ alloy, or pneumatic type . In the operation of the machine 1 ': [form, shape ° 12, the JT maintains a continuous reciprocating action under /1, the above-mentioned actuating film of the second month (8), (C) 'When the injection is actuated I Set to 1, in the upper punch t two-moving piece 12, the action in the _ direction causes the chamber 10, the internal pressure H, so that the fluid 2' originally located outside the injection actuating device r will thus be attracted and attracted through the input hole 113' Entering the chamber 10, a working fluid_3 is formed, and at this time, the injection element 115 is in a closed state, as shown in the first figure (b). When the negative-actuating actuator 1 is in the downstroke, since the working fluid 3' in the chamber 10 is pushed by the actuating piece 12 toward the !) direction, the internal pressure of the chamber 10 is increased, and then the push is promoted. The working fluid 3, which is originally sucked into the chamber 10 during the upstroke, is sprayed to form a jet flow through the input orifice 11 3 ' and the injection element 11 5 ' as it is pushed. In each reciprocating cycle, 'because the working fluid sucked in the upper stroke is completely ejected at the time of the downstroke, that is, the mass of the working fluid that is drawn in and out is the same, so in the actuating piece 1 2 ' During the reciprocating operation, the net mass flux of the working fluid entering and exiting the injection actuator is zero. On the other hand, if the injection actuating device is in the process of reciprocating and acting, the structure and arrangement of the injection holes by the ejection actuating device

Page 11 1267616, Invention Description (3) The working fluid is no longer completely in and out via the same injection element: the actuation device will actuate the working fluid being injected into the injection actuation device and the ejected injection The mass flux of the working fluid of the device is different, resulting in a non-zero net mass flux jet Uon1eFC)iet-Mass-Flux Jets. According to the original fluid mechanics, it is known that due to the limitation of the fluid Reynolds number (R ey η ο 1 ds N umbers ), the fluid mixing and flow field control (such as · fluid guiding, turbulent flow control, etc.) to be applied to the micro system As well as fluids such as cooling, it has traditionally been necessary to achieve fluid mixing, flow field control or cooling by the design of the complex Pipes structure and M〇ving parts of the phase, thus increasing the traditional fluid. Application limitations in miniaturized systems. When a synthetic jet is ejected by the ejecting element, a vortex is induced in its shear layer, which can further wind the fluid around the ejection actuation to produce a vortex enhancement. In addition, the actuator device for generating the synthetic jet has a simpler structure, which is advantageous for its development in miniaturization applications; therefore, the synthetic jet has a fine fluid mixing and precision flow field control. It is widely used in the above fields due to its application advantages. However, due to the injection actuation device that produces the zero net mass flux synthesis jet during the reciprocating action and action, the mass flux of the working fluid drawn into the injection actuator and the working fluid being ejected from the injection actuator is completely The same 'when the temperature difference between the inhaled and the ejected fluid is extremely small, the heat transfer effect of the jet will be greatly reduced, and the cooling effect is lost. Therefore, if a simpler non-zero net mass flux synthetic jet generation method can be provided

1267616 V. INSTRUCTIONS (4) The dynamic device, by introducing a new fluid, increases the temperature difference between the inhaled and the ejected fluid and the resulting non-zero net mass flux to synthesize the flow field enhancement effect of the jet, not only It is applied to the field of traditional flow field control, and can further effectively improve the heating problem of high-heat-rate electronic components that are difficult to break at present; the motive of the present invention is thus awakened. SUMMARY OF THE INVENTION The present invention provides a double-acting synthetic jet actuating device comprising: a chamber for providing a fluid actuating space; and a partitioning device located inside the chamber for the chamber Divided into two sub-chambers; a control system is coupled to the chamber for controlling the partitioning device to cause the separating device to perform a reciprocating motion; a fluid input system is coupled to the chamber A working fluid is passed through the chamber; and a fluid output system is coupled to the chamber for injecting a working fluid out of the chamber. According to the above concept, in the reciprocating motion of the partitioning device, the effect of pushing and pulling the working fluid inside and outside the sub-chamber can be simultaneously performed, and the fluid input system and the fluid output system are matched. Structured and arranged to create a series of vortices and form a non-zero net mass flux of synthetic jet fluid. According to the above concept, wherein the partitioning device is a piston. According to the above concept, wherein the control system is a mechanical linkage system. According to the above concept, the partitioning device is one of a piezoelectric film and an acoustic film. According to the above concept, wherein the control system is a control circuit system.

Page 13 1267616 V. INSTRUCTION DESCRIPTION (5) According to the above concept, the fluid input system further includes a first control valve. According to the above concept, the first control valve is one of an active control valve and a passive control valve. According to the above concept, wherein the fluid input system comprises at least one fluid input element. According to the above concept, wherein the fluid input element is a dimmer (〇)

According to the above concept, wherein the fluid input member is a hole. According to the above concept, wherein the fluid output system further comprises a second control valve. According to the above concept, the second control valve is one of an active control valve and a passive control valve. According to the above concept, the fluid output system further comprises at least two fluid output elements respectively connected to the respective sub-chambers in a specific array manner.

According to the above concept, wherein the fluid output element is a nozzle. According to the above concept, wherein the fluid output member is a hole. According to the above concept, the hole is an annular hole. According to the above concept, the annular holes are arranged coaxially. According to the above concept, the arrangement is arranged in pairs. According to the above concept, the arrangement is arranged in an axisymmetric manner. Another object of the present invention is to provide a cooling method utilizing a non-zero mass synthesis jet comprising the steps of: providing a heat to be cooled

Page 14 1267616 V. INSTRUCTIONS (6) Source; providing a double-acting synthetic jet actuating device comprising a chamber separated by a dividing device and corresponding to the two separated by the separating device a sub-chamber; controlling the separating device of the double-acting synthetic jet actuating device to perform a reciprocating motion to generate a push and pull effect respectively on the fluid inside and outside the sub-chamber The generation of series vortex. According to the above concept, by the effect of the push and pull, the two sets of the reverse acting fluids alternately enter the sub-chamber via the fluid input system of the double-acting synthetic jet actuating device, and The fluid output system of the double-acting synthetic jet actuation device exits the subchamber to produce a non-zero net mass flux synthetic jet; the synthetic jet and the series of swirls impact the surface of the heat source The action, and the synthesis jet and the series of vortexes drive the surrounding fluid, and heat exchange the heat source to cool the heat source. According to the above concept, wherein the chamber is for providing a fluid actuating space; the partitioning device is coupled to the chamber for separating the chamber into the two corresponding sub-chambers; the fluid input system is coupled to The chamber is for allowing a working fluid to enter the chamber; and the fluid output system is coupled to the chamber for outputting the working fluid to the chamber. According to the above concept, the partitioning device is controlled by a control system coupled to the chamber for controlling the reciprocating movement of the partitioning means within the chamber. According to the above concept, wherein the fluid output system further comprises at least two fluid output elements. According to the above concept, the flow system produces at least two sets of counter-oscillated jets by a double action of the separating means.

Page 15 1267616 _ V. Description of the Invention (7) According to the above concept, wherein the at least two sets of counter-oscillating jets are caused by the arrangement of the fluid output elements, thereby causing the vortex to have Enhance the effect. The present invention can be further understood by the following drawings and detailed descriptions: [Embodiment] Please refer to the second figures (a) - (c), which are schematic views of the first embodiment of the present invention. The double-acting synthetic jet actuating device 1 of the present invention comprises a sealed chamber 10 having a diaphragm 1 2 inside, separating the chamber 10 into two corresponding sub-chambers 10A and 10B. On the outer wall 11 of the sub-chambers 10A and 10B, fluid input elements 4A, 4B and fluid output elements 3A, 3B are respectively attached to form a fluid input system 4 and a fluid output system 3, respectively; wherein the fluid output element 3A, 3B is arranged in pairs with the fluid input elements 4A, 4B. The control circuit 2 is disposed inside the chamber 10 for controlling the diaphragm 12, and the required power source is supplied by the power supply unit 20. Referring to FIG. 2(b), when the diaphragm 12 is driven by the control circuit 2 and is actuated in the direction of the sub-chamber 1 Ο A (ie, toward the U) during the upstroke, the diaphragm 12 is pushed upward. The pressure of the fluid in the sub-chamber 1 Ο A is increased, thereby causing a portion of the working fluid 30 a in the sub-chamber 1 Ο A to be ejected from the sub-chamber 10A via the fluid output member 3A to form a main ejecting fluid 31a. At the same time, in the case where the fluid input member 4 A is not provided with a one-way valve, the pressure rise inside the sub-chamber 1 Ο A will also cause another secondary fluid flow, that is, a portion in the sub-chamber 10A. The fluid 40a will also be pressurized and thus flow through the fluid

Page 16 1267616 V. INSTRUCTION DESCRIPTION (8) Incoming element 4A flows out of sub-chamber 10A to form a primary injection fluid 41a; wherein the mass of the secondary injection fluid 4 1 a is the same as that of fluid input element 4A Construction is related to size. On the other hand, since the operation modes of the sub-chambers 10A and 10B differ only by one time phase difference, the working fluid in the sub-chamber 1 〇B acts just as the sub-chamber for the sub-chamber 1 Ο B 1 The fluid in the 〇A is reversed, meaning that when the pressure in the subchamber 10A rises, the pressure in the subchamber 10B will drop, so that the fluid 4 lb outside the actuator will be inhaled via the fluid input element 4B. The chamber 1 Ο B; likewise, in the case where the fluid output element 3 B is not provided with a one-way valve, the chamber-out fluid 3 lb will be drawn into the sub-chamber 10B via the fluid output element 3B. Referring to Figure 2(c), a schematic diagram of fluid flow of the double-acting synthetic jet actuator 1 of the present invention during the downstroke is depicted. When the diaphragm 12 is driven by the control circuit 2 to push in the direction of the far ion chamber 1 〇A (i.e., in the direction of D), the pressure inside the subchamber 1 Ο A will drop, so that the double-acting synthetic jet is actuated. The fluid 42a outside the device 1 will flow from the outside to the subchamber 1 Ο A via the fluid input member 4A to form a main influent fluid 4 3 a; while the fluid output member 3 A is not added with a one-way valve In this case, the pressure drop in the sub-chamber can also cause the external fluid 32& to flow into the sub-chamber i〇A via the fluid output element 3A to form a fluid 33a to be inflowed; and the secondary fluid 3 The magnitude of the 3 a mass flux is related to the form and size of the fluid output element 3 a . Similarly, for subchamber 1 〇B, the pressure in subchamber 1 q B ~ working fluid factor chamber 1 〇 B rises, so that fluid 3 3 b in subchamber 1 〇b 4 will Sub-chamber is ejected via fluid output element 3 B; [〇b, shape

Page 17 1267616 V. INSTRUCTION DESCRIPTION (9) Injecting fluid 3 2 b ; Similarly, in the case where the fluid input element 4 B is not unidirectionally wide, a small portion of the chamber fluid 43b will pass through the fluid output element 4B The subchamber job is ejected. Please refer to the third figure, which is a schematic view of a second embodiment of the double-acting synthetic jet actuation device 1 of the present invention; the interior of the chamber 10 is arranged in the same manner as the second, (a); In the embodiment, the control circuit 2 is disposed outside the cavity ^10, and the required power source is also supplied by the power supply device 20. It must be understood that although the control line 2 is placed outside the chamber, the design of the cavity to 1 〇 can be simplified, and the addition of an additional heat source inside the chamber , is avoided, and 5' is in the control circuit 2 Between the diaphragms 12, an additional connection = 3 1 (such as a mechanical connector or an electromagnetic connector) must be designed to facilitate the control of the lightning action. In addition, the control circuit 2 can also be used as a design of the heat radiation 盥埶 opposite surface 22 to increase the control circuit (4) outside the chamber 10. Further designed to be partially located in the chamber 10, part of the fluid in the 'species two:: (wide (4) and fifth (a)-(d), respectively describe the shape, where the arrow:) the flow between the components In the fifth picture (a), the flow direction of the body is reduced. The fourth picture (a) 蛊杜', the price of the L body input (output) component system Λ - oblique 荆 - -, pieces, such as slits or holes; because of this: the penalty is - for the shape and structure of the shapeless, Therefore, regardless of whether the fluid is from: = = y symmetrical (forward flow, as shown in Figure 4 (a)), or / for lateral conduction on the right side (reverse flow, as shown in Figure 5 f / self The 70 pieces turn to the left

"Β) No, the flow and flow on the left and right sides 1267616 V. Invention description (10) The field distribution is not much different. For example, the passive asymmetry element diagram of the flow characteristics of the fourth figure (b) and 箆: ) when the incoming fluid flows through - having an asymmetrical shape in the shape of such a component, a nozzle, a full-rotation valve, etc., due to the component's structure causing a forward slamming design, the fluid will directional flow or velocity Change; the μ property of the action produces a different situation, that is, when the fluid from the component 2: =) describes the flow of the fluid in the forward direction (8), the reverse flow of the fluid is described as ^1, and the fifth figure is formed. The two sides of the high rise 'cause the asymmetric structure of the ^4 piece to reduce the flow rate, at this time, the j side can lead to the left side of the day: 'The component presents a partially closed state. When the reverse flow of the % component, the fourth figure (c), (d) and the first, (^ ^ ) it # ^ t ^ ^ ir ^ ^ ^ ^ ^ ^ ^ ^ dynamic and active check valve. Passive type „ ^10% type of parts, including the figure (C) and the fifth figure (C) are only individual “:: two 3 states are many, the first: the open state when flowing in the forward direction and the fluid 2 to 5, the valve In the fluid-to-right state, the closed-form (4) system in which the fluid is only allowed to flow unidirectionally to the right two = two is shown in the asymmetric type. Figure 24 (4) and Figure 5 show the fluid 70 in the open and closed state: the active check valve) The asymmetry structure of the component and the reading and control V 配 Π Π 排列 arrangement can make the fluid The difference between the flow rate of the fluid and the ejected fluid with different δ components is: the purpose of injecting the zero net mass flux into the synthesizing jet when the component is extracted. Seeking the sixth figure (a)-(b), Sun Shizhen mouth is the double-action synthetic jet 1267616 of the present invention. V. Invention (11) Actuating device 1 is a schematic view of a third embodiment; compared with the foregoing two embodiments, the third embodiment differs only in the shape of the double-acting synthetic jet actuation device injection 1 and the sub-chambers 10A, 10B and the fluid output members 3A, 3B And the arrangement between the fluid input elements 4B. In this embodiment, the double-acting synthetic jet actuating device 1 is an axisymmetric structure having an axis of symmetry 9, and the fluid output members 3A and 3B are arranged symmetrically about the axis of symmetry 9; The double-acting synthetic jet actuating device 1 is in the upstroke (the actuating plate 12 moves in the U direction, as shown in the sixth figure (a)) or in the downstroke (the actuating plate 12 acts in the D direction, as in the first In the case of Fig. 6(b), the action and effect of the fluid are the same as in the previous embodiment. By the arrangement design of the fluid output elements 3 A, 3 B and the fluid input element 4B, the double-acting synthetic jet actuating device 1 can be effectively fluidized by each reciprocating action of the actuating plate 1 2 . The input elements 4A, 4B - side suction fluid, while the fluid output: the elements 3A, 3B - side discharge fluid to achieve the purpose of ventilation; at the same time, by the axisymmetric arrangement of the fluid output elements 3A, 3B, each reciprocating cycle It is possible to create two enhanced full rotations 60 due to the mutually opposite flow of the two fluid output elements 3 A, 3 B to entrap more fluid around to enhance the effect of the synthetic jet. Referring to Figures 7(a)-(c), respectively, in accordance with a third embodiment of the double-acting synthetic jet actuation device 1 of the present invention, the respective fluid output elements (3 A, 3 B) are different. A cross-sectional view of the shape and the axisymmetric arrangement; the shape of the fluid output elements 3 A, 3 B 'the fluid output elements 3 A, 3 B are viewed from the outside of the double-acting synthetic jet actuating device 1 along the direction of the axis of symmetry 9 In addition to the three ways that the configuration can be illustrated, other shapes and configurations

Page 20 1267616 V. INSTRUCTIONS (12) -- The formula can also be used in any random combination. The fluid output element combination of the seventh figure (a) is composed of a circular fluid output element 3A and a set of circular fluid output elements 3B surrounding the fluid output element 3A; and the fluid output of the seventh figure (b) In the component combination, the fluid output member 3B is a set of sheet type fluid output members, and in the seventh diagram (c), the fluid output members 3 A, 3 B are composed of a circular fluid output member 3A and an annular fluid output member 3β. The combined coaxial arrangement. Through the arrangement of the seventh figure (a) - (c), the double-acting synthetic jet actuating device of the present invention can increase the generation of the vortex by the action of the reverse shock of the fluid, and the effect thereof is The effect of the paired arrangement shown in the second figure (a) is similar. See Figure 8 (a) - (b) for the flow field distribution at the outlet of the fluid take-off elements 3A and 3B. Schematically, the fluid output elements 3Α, 3β are passive asymmetrical output elements (such as nozzles, vortex valves, etc.) having rectifying characteristics as shown in Fig. 4(b). It is shown that when the impeller-containing jet actuating device is in the upstroke, the diaphragm is directed to the two chambers 10 Α, and the fluid will be pushed out of the sub-chamber 1 through the fluid-discharging element 3 to produce the jet fluid 3 1 a; the production outside the actuating device The jade a mountain and the m-worked lychee, the field changed and intersected due to the mouth of the jet fluid 3 1 a, so the volume is out of a pair of vortex 6 〇 and 6 & •, the appropriate design of the weeping output element 3B So that the other part of the meridian/gut body will be simultaneously inhaled into the sub-chamber 10B binary: to: the change of the field, and the fluid The second movement of the component 3A is also caused by the surrounding flow 4 幡 · 麦 麦 η 秘 a a a a a a a a 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生 产生The lower stroke (ie, the diaphragm 丨2 卩刖 朝 D 。 。 。 在 在 在 在 在 在 在 在 在 同 同 同 同 同 同 同 同 同 同 同 同 同 同 同 同 同 同 新 新 新 新 新 新 新 新 新 新 新 新 新Also obtained

Page 21 1267616 V. Inventions (13) Enhanced. Due to the design, the effect of cooling the flow actuating device is obtained by using the string. Please refer to the net mass flow diagram. The first 1 is to be cooled to form a jet to actuate the complex motion; the next two strokes are Ε 6 0 1, and the mouth flows out in the direction of the blocking of the near vertical body 13; the amount is vortexed 6 a Since this will make the distance heat source at a lower temperature than this, regardless of the direction of operation of the diaphragm 12, a series of vortexes can be generated outside the system to obtain the double-motion synthetic jet actuation ° of the present invention. It is possible to force the flow of external fluid to achieve a forced Ϊΐ5, which is a more efficient cooling method. The ninth diagram is generated by the injection of the ^, and the ninth diagram specifically describes a heat source of the jet flow to the heat source, and the body is cooled and zero-first = one double-motion synthesis as described above... one side of the surface of the source body 1 3 The diaphragm 12 in the dual action device 1 is then controlled such that the diaphragm 12 produces a periodic two diaphragm 1 2 for a complete reciprocating motion (ie, containing, f, will form the vortex 6a, 6b and obtain an enhanced vortex) 6〇, the grazing fluids 31a, 32b; the ejecting fluids 31a, 32b directly illuminate the sequential T-directions to the surface of the heat source body 13, and receive the heat source, and the ejecting fluids 3la and 32b will turn to the parallel heat source body 丨3. 6 1 a and 6 1 b, and take away part of the heat of the surface of the heat source body 3, 6b and obtain the enhanced vortex 6 〇, 6 〇 1 will also take away part of the heat of the surface of the heat source body 13 due to its use. The operation of the double-acting synthetic jet actuating device 1 is a change of the flow field around the double-acting synthetic jet actuating device. The double-acting synthetic jet actuating device 1 has an outer side and has bodies 8a and 8b. Winded into the above-mentioned active flow field, the same temperature will be farther, and the temperature is less affected by the temperature of the heat source. Fluid 1267616 V. Inventive Note (14) - and 41b 'inhalation of the sub-chambers 1 〇 8 and i 〇 b via the fluid input elements 4α, 4β, the purpose of ventilating the chamber, thus cooling the heat source body 13 The role also has a further contribution. 乂 ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ 第十 第十 第十 第十Compared with the open system of the eighth figure, the 2b and the inflow fluids 42a, 41b in the closed heat source system have a higher temperature; the lack of the system: the second is: r is the pumping of the jet actuator 1 And the seal is transmitted from the inner wall 51; : 2: will help the heat transfer function of the closed system 50 to extend the surface system 50. ...,,,,,,,,,,,,,,,,, The non-zero net mass flux control parameter range i is expanded by "Ming: available for heat transfer and fluid applications - and this is the fluid of the present invention (eg, MEMS) Control. ^ is enough to apply to the tiny ruler, t. The cooling of the square:: double-action synthetic spray The fluid actuating device and the inner phase component are arranged in a C-double chamber, and more than one of them are combined with: the configuration of our ball output component, and the 扣 _ _ _ _ _ _ _ _ _ _ _ _ _ In the reciprocating stroke of the pull, both are set to follow the flow of the working fluid in the ί:: jet flow:::f non-zero cleansing: two in the process of jet generation: 2 in the invention The interaction between the wrong reverse jets; and the incoming _F can be further vortexed

9BII Page 23 1267616 V. INSTRUCTIONS (15) Airflow produces an enhanced effect. The double-acting synthetic jet fluid actuating device of the present invention has a higher efficiency than the conventional synthetic jet flow generating device which generates only zero net mass flux jets in each cycle (including the two strokes) The heat dissipation effect and better cooling effect will contribute to the development of high-efficiency heat dissipation technology. The double-acting synthetic jet actuating device of the present invention has the following advantages in addition to being used alone to replace the impact cooling injection system: 1. The impact effect of the non-zero mass flux synthetic jet of the present invention is far away The heat source side venting function and the large amount of fluid entrained by the vortex structure will cause the impacted surface (i.e., the heat source surface) to produce a very high heat transfer effect. 2. The geometry of the double-acting synthetic jet actuating device of the present invention is relatively simple, and does not require a conventional pipeline structure (P i P es structure ) and complicated moving parts (movingparts), such as an additional device such as a fan, so that the overall cooling The system has a large design flexibility, so it can be designed to be small and simple to save cost, energy consumption and space. 3. The corresponding cooling device and method of the present invention can be applied to a closed device to perform forced convection cooling effect on the heat source body located in the closed device without the action of external fluid. In summary, the case is a novel, progressive and industrially practical invention with profound development value. The present invention has been modified by those skilled in the art and is intended to be modified as such.

Page 24 1267616 The diagram is a simple description of the composition: the composition is a conventional zero net mass flux synthetic jet actuation device, ΐ: Π: is a conventional zero net mass flux synthetic jet actuator 彺In the case of the fluid injection generated by the upper flushing, the μ(0) is the fluid jet generated by the conventional zero net mass flux synthetic jet actuating device. The double-acting synthetic jet actuating device of the present invention is the first embodiment of the double-acting synthetic jet actuating device of the present invention, and the fluid nozzle generated by the second process; For example, the fluid nozzle generated in the downstroke is shot in the second figure, which is a schematic structural view of the embodiment of the invention of the present invention; and >. The jet flow actuating device second = four figures (a) (d) respectively describe the striking stroke 4 of the present invention, the flow of fluid in four different configurations of the fluid in the upper flow; k output) between the components Figure 5 (a) - (4), respectively, depicting the fluid input of the four different structures in the stroke of the present invention (= the device is flowing under the condition; the other is the sixth figure) (a)-(b) The schematic diagram of the third embodiment of the double-acting human device of the present invention; the jet flow actuation seventh diagrams (a) - (c) are respectively the third embodiment of the dual actuation device of the present invention. The chamber sprays the elementary synthetic jet<different shapes and page 25, 12,676,16. The figure briefly illustrates a cross-sectional view of the axisymmetric configuration; the eighth figure (a)-(b) shows the fluid at the exit of the ejection element. The flow field is divided into parts; the ninth figure is a schematic diagram illustrating the cooling of an open heat source body by using a non-zero net mass flux synthesis jet; the tenth figure is a description of the use of non-zero net mass flux synthesis spray A schematic diagram of the flow cooling a closed heat source body.

[Simple description of the symbol] 喷射 Jet actuator 10' Chamber 11' Outer wall 11 3 ' Input hole 115' Injection element 12' Actuator 2', 3' Fluid 1 Double-acting synthetic jet actuation device 9 Symmetry axis

10 chamber 10A, 10B sub chamber 11 outer wall 12 diaphragm 2 control circuit 20 power supply unit

Page 26 1267616 Schematic description 21 Connector 2 2 Extension surface 3 Fluid output system 3A, 3B Fluid output element 4 Fluid input system 4A, 4B Fluid input elements 30a, 31a, 32a, 33a, 30b, 31b, 32b, 33b 40a, 41a, 42a, 43a, 40b, 41b, 42b, 43b, 60, 601, 6a, 6b, 8a, 8b fluid 13 heat source body 50 enclosing system 51 inner wall 5 2 outer wall U, D actuating piece actuating direction

Page 27

Claims (1)

1267616 6. Patent application scope 1. A double-acting synthetic jet flow actuating device comprising: a chamber for providing a fluid actuating space; a partitioning device located inside the chamber for the cavity The chamber is divided into two sub-chambers; a control system is coupled to the chamber for controlling the partitioning device to cause the separating device to perform a reciprocating motion; a fluid input system coupled to the chamber a working fluid is introduced into the chamber; and a fluid output system is coupled to the chamber for outputting the working fluid to the chamber; wherein, by reciprocating movement of the separating device, simultaneously The working fluid inside and outside the sub-chamber generates a push-and-pull effect, and cooperates with the fluid input system and the structure and arrangement of the fluid output system to generate a series of vortices and form a non-zero net Synthetic jet fluid of mass flux. 2. The synthetic jet actuation device of claim 1, wherein the separation device is a piston. 3. The composite jet actuation device of claim 2, wherein the control system is a mechanical linkage system. 4. The composite jet actuation device of claim 1, wherein the separation device is one of a piezoelectric film and an acoustic film. 5. The composite jet actuation device of claim 4, wherein the control system is a control circuitry. 6. The composite jet actuation device of claim 1, wherein Page 28 1267616 VI. Scope of Application The fluid input system further includes a first control valve. 7. The composite jet actuation device of claim 6, wherein the first control valve is an active control valve and a passive control valve. wherein the synthesis is as described in claim 7 A jet actuation device, wherein the fluid input system includes at least one fluid input element. 9. The composite jet actuation device of claim 8 wherein the fluid input member is a flow deflector (d i f f u s e r ). The composite jet actuation device of claim 8, wherein the fluid input member is a hole. 11. The synthetic jet actuation device of claim 1, wherein the fluid output system further comprises a second control valve. 1 2. The composite jet actuation device of claim 11, wherein the second control valve is one of an active control valve and a passive control valve. 1. The synthetic jet actuation device of claim 12, wherein the fluid output system further comprises at least two fluid output elements respectively coupled to each of the subchambers and in a particular arrangement . 1 4. The synthetic jet actuation device of claim 13 wherein the fluid output member is a nozzle. The composite jet actuation device of claim 13 wherein the fluid output member is a hole. 1 6. The collective jet actuation device of claim 15, wherein the hole is an annular hole. Page 29 1267616 Patent Application Range 1 7 · The synthetic jet actuating device described in claim 16 of the patent application, wherein the annular holes are coaxially arranged. 18. The composite jet actuation device of claim 3, wherein the arrangement is in pairs. 1 9 The synthetic jet actuating device of claim 3, wherein the arrangement is arranged in an axisymmetric manner. 20 0 - a cooling method utilizing a non-zero mass synthesis jet, comprising the steps of: providing a heat source to be cooled; #提供一个双式合成流流动装置, which comprises a chamber separated by a partition 4, and a sub-chamber that is separated from the rain by the partitioning device; The separating device of the double-acting synthetic jet actuating device causes the _ 2 to reciprocately move to generate a pulling effect on the fluid inside and outside the sub-chamber, thereby triggering a series of vortex generation; The t, by the effect of the push and pull, causes the two sets of inversion actuations to enter the sub-chamber through the fluid input of the double-acting synthetic jet actuation device, and Passing the double-acting synthetic jet actuation device $ fluid output system away from the sub-chamber to generate a non-zero net mass flux; the synthetic jet and the series of vortexes for the heat source The surface impersonation function and the synthetic jet exchange heat with the series of vortexes for the surrounding fluid to cool the heat source. The cooling method of claim 2, wherein the chamber is for providing a fluid actuating space; the partitioning device is connected to the chamber, Page 30 1267616 6. The patent application scope is to divide the chamber into the two corresponding sub-chambers; the fluid input system is coupled to the chamber for allowing a working fluid to enter the chamber; and the fluid output A system is coupled to the chamber for outputting the working fluid to the chamber. 2 2. The cooling method of claim 20, wherein the separation device is controlled by a control system, wherein the control system is coupled to the chamber for controlling the separation device in the chamber A reciprocating movement. 2 3. The method of cooling according to claim 20, wherein the fluid output system further comprises at least two fluid output elements. 2. The method of cooling according to claim 23, wherein the flow system produces at least two sets of counter-oscillated jets by a double-acting action of the separator. 2. The cooling method of claim 24, wherein the at least two sets of counter-oscillating jets interact by the arrangement of the fluid output elements to cause the vortex to have a reinforcing effect. .