WO2023022115A1 - Soupape piézoélectrique - Google Patents

Soupape piézoélectrique Download PDF

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Publication number
WO2023022115A1
WO2023022115A1 PCT/JP2022/030822 JP2022030822W WO2023022115A1 WO 2023022115 A1 WO2023022115 A1 WO 2023022115A1 JP 2022030822 W JP2022030822 W JP 2022030822W WO 2023022115 A1 WO2023022115 A1 WO 2023022115A1
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WO
WIPO (PCT)
Prior art keywords
valve
valve seat
piezoelectric
actuator
longitudinal direction
Prior art date
Application number
PCT/JP2022/030822
Other languages
English (en)
Japanese (ja)
Inventor
隆文 伊藤
忠史 松下
世傑 徐
徴力 王
Original Assignee
株式会社サタケ
有限会社メカノトランスフォーマ
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 株式会社サタケ, 有限会社メカノトランスフォーマ filed Critical 株式会社サタケ
Publication of WO2023022115A1 publication Critical patent/WO2023022115A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic

Definitions

  • the present invention relates to a piezoelectric valve that opens and closes using the displacement of a piezoelectric element.
  • the piezoelectric valves described in Patent Documents 1 and 2 are equipped with actuators that utilize the characteristics of piezoelectric elements that are excellent in high-speed response performance.
  • the disclosed piezoelectric valve further includes a displacement magnifying mechanism for magnifying a small displacement of the piezoelectric element on the actuator based on the principle of leverage.
  • the disclosed piezoelectric valve has excellent responsiveness, when it is used as an ejector valve of an optical sorting machine for grains such as rice grains to remove defective products, good products are less likely to be removed as a side effect. It has been found from tests and empirical rules that the contamination rate of the removed defective products is higher than that of electromagnetic valves.
  • the valve disc moves toward and away from a valve seat provided on a valve seat plate by an arcuate motion.
  • the timing at which the valve element contacts and separates from the valve seat differs (a time difference occurs) between the distal end side far from the fulcrum and the proximal end side close to the fulcrum. Therefore, it is necessary to shorten the length of the valve seat of the piezoelectric valve, but shortening the length of the valve seat has the problem of reducing the amount of compressed gas discharged when the valve is opened.
  • the piezoelectric valve comprises: an actuator having a valve body and driving the valve body; a valve seat plate that has a valve seat and a discharge channel that contact and separate from the valve body and that fixes the actuator; a body case that houses the valve seat plate, The actuator a base secured to the valve seat plate; a piezoelectric element having one end connected to the mounting surface of the base and extending in the first longitudinal direction; a support part that is integrally provided with the base part and extends in a second longitudinal direction that intersects with the first longitudinal direction along with the piezoelectric element; an action portion connected to the other end portion of the piezoelectric element and the tip portion of the support portion and displaced in directions different from the first longitudinal direction and the second longitudinal direction as the piezoelectric element expands and contracts;
  • the body case is a gas supply port to which compressed gas is supplied; a gas discharge port for discharging the compressed gas supplied from the gas supply port through the discharge path of the valve seat plate by the separation between the valve body
  • a preferred embodiment of the piezoelectric valve according to the present invention is The acting portion of the actuator is displaced in a plane parallel to a plane including the first longitudinal direction and the second longitudinal direction, which is different from each of the first longitudinal direction and the second longitudinal direction, as the piezoelectric element expands and contracts. direction.
  • a preferred embodiment of the piezoelectric valve according to the present invention is A plurality of annular protrusions are arranged side by side in the width direction of the valve seat, and one end of the discharge passage opens into the plurality of annular protrusions in a slit shape along the length direction orthogonal to the width direction of the valve seat.
  • a preferred embodiment of the piezoelectric valve according to the present invention is
  • the discharge channel has a plurality of valve-seat-side channels that open into the plurality of annular projections, and one main channel that is open to the surface of the valve-seat plate through which the valve-seat-side channels intersect and communicate with each other.
  • the inner surface of the main channel has a convex shape toward the valve seat surface at communicating portions where the respective valve seat side channels intersect, and a concave shape between the communicating portions.
  • the main channel has a channel cross section larger than the sum of the channel cross sections of the respective valve seat side channels.
  • the piezoelectric valve according to the present invention includes: an actuator having a valve body and driving the valve body; a valve seat plate that has a valve seat and a discharge channel that contact and separate from the valve body and that fixes the actuator;
  • a piezoelectric valve comprising a body case that houses a valve seat plate, The actuator a base secured to the valve seat plate; a piezoelectric element having one end connected to the mounting surface of the base and extending in the first longitudinal direction; a support part that is integrally provided with the base part and extends in a second longitudinal direction that intersects with the first longitudinal direction along with the piezoelectric element; an action portion connected to the other end portion of the piezoelectric element and the tip portion of the support portion and displaced in directions different from the first longitudinal direction and the second longitudinal direction as the piezoelectric element expands and contracts;
  • the body case is a gas supply port to which compressed gas is supplied;
  • a piezoelectric valve comprising a gas discharge port for discharging compressed gas supplied from the gas
  • the support portion of the actuator has a constriction in the intermediate portion extending in the second longitudinal direction.
  • a preferred embodiment of the piezoelectric valve according to the present invention is
  • the valve seat plate has a valve seat portion in which the valve seat and the discharge passage are formed, and the valve seat is provided on at least one surface of the front side or the back side of the valve seat portion,
  • the actuator is fixed to at least one side surface of the valve seat plate so that the valve body faces the valve seat.
  • a preferred embodiment of the piezoelectric valve according to the present invention is A valve seat plate has a valve seat portion in which a valve seat and a discharge passage are formed, and valve seats are provided on opposite surfaces of the front side and the back side of the valve seat portion, A plurality of actuators are fixed to the valve seat plate so that each valve disc faces each valve seat.
  • the piezoelectric valve of the present invention even if the length of the valve seat is shortened, the circumferential length of the opening in the discharge passage can be lengthened as a whole by the plurality of annular protrusions. Further, according to the piezoelectric valve of the present invention, the valve seat surface has an inclined surface around the plurality of annular protrusions, and when the valve is opened, the compressed gas is taken into the opening of the discharge passage from around the plurality of annular protrusions. resistance can be reduced. Therefore, according to the piezoelectric valve according to the present invention, even when the valve disc moves toward and away from the valve seat by arcuate motion and the length of the valve disc and the valve seat is shortened, the pressure required to open the valve is reduced. It is possible to secure a sufficient amount of compressed gas to be discharged.
  • the plurality of annular projections can increase the overall peripheral length of the opening in each valve seat-side channel. can.
  • the length of each valve seat side channel is shortened, and the resistance in the valve seat side channel when taking in compressed gas into the discharge channel when the valve is opened is reduced. can do.
  • the depth of the grooves between the annular protrusions can be increased to form a large air reservoir, so that when the valve is opened, the compressed air taken into the valve-seat-side channel can be reduced. Gas capacity can be secured.
  • the piezoelectric valve according to the present invention even when the valve disc moves toward and away from the valve seat by arcuate motion and the lengths of the valve disc and the valve seat are shortened, It is possible to secure the required amount of compressed gas to be discharged when the valve is opened.
  • the valve seat surface has an inclined surface around the annular convex portion, and reduces the resistance when the compressed gas is drawn into the opening of the discharge passage from the circumference of the annular convex portion when the valve is opened. be able to. Therefore, according to the piezoelectric valve according to the present invention, even when the valve disc moves toward and away from the valve seat by arcuate motion and the length of the valve disc and the valve seat is shortened, the pressure required to open the valve is reduced. It is possible to secure a sufficient amount of compressed gas to be discharged.
  • the displacement of the acting portion can be increased.
  • the valve body provided in the actuator moves in an arc with respect to the valve seat provided in the valve seat plate with the constriction as a fulcrum, so that the orbit of the valve body is stable. do.
  • FIG. 1 is a perspective view of a piezoelectric valve according to one embodiment of the invention
  • FIG. 2 is a front view of the piezoelectric valve of FIG. 1
  • FIG. 1 is a perspective view of one embodiment of an actuator provided in a piezoelectric valve according to the present invention
  • FIG. FIG. 4 is an explanatory view of the actuator of FIG. 3 as viewed from the side
  • 1 is a perspective view of one embodiment of a valve seat plate provided in a piezoelectric valve according to the present invention
  • FIG. Figure 6 is a perspective view of the valve seat plate of Figure 5 with the actuator shown in Figures 3 and 4 secured
  • FIG. 7 is a side view of the valve seat plate in the state of FIG. 6
  • FIG. 1 is a perspective view of a piezoelectric valve according to one embodiment of the invention
  • FIG. 2 is a front view of the piezoelectric valve of FIG. 1
  • FIG. 1 is a perspective view of one embodiment of an actuator provided in a piezoelectric valve
  • FIG. 6 is an explanatory view of the valve seat portion of the valve seat plate according to the embodiment of FIG. 5 as seen from the front side;
  • FIG. 9 is an explanatory view of the valve seat portion of FIG. 8 viewed from the side;
  • FIG. 9 is a cross-sectional view showing the valve seat portion viewed from the cross-section AA of FIG. 8;
  • FIG. 10 is a cross-sectional view showing the valve seat portion viewed from the cross-section BB in FIG. 9;
  • FIG. 1 shows a perspective view of a piezoelectric valve according to one embodiment of the present invention.
  • FIG. 2 shows a front view of the piezoelectric valve of FIG.
  • the piezoelectric valve 1 includes a valve body 2, an actuator 3 described later, and a valve seat plate 4 described later, which is arranged inside the valve body 2 with the actuator 3 being fixed. Prepare.
  • the valve body 2 is a case with an open rear surface (corresponding to the lower surface in FIGS. 1 and 2). , the valve body 2 is provided therein with a gas pressure chamber supplied with compressed gas from an external compressed gas supply (not shown). Also, on the front surface of the valve body 2 (corresponding to the upper surface in FIGS. 1 and 2), there is a connector section (Fig. not shown) are provided.
  • a gas inlet for sucking compressed gas into the valve body 2 and a plurality of gas outlets for discharging the compressed gas are opened on the front surface of the connector.
  • a gas supply port 21 communicating with the gas inlet of the connector and a plurality of gas outlets 22 communicating with the respective gas outlets of the connector are opened on the front surface of the valve body 2 .
  • a cover body 6 is attached to the rear surface of the valve body 2 .
  • a wiring connector for supplying power to a piezoelectric element 32, which will be described later, is formed on the rear surface of the cover body 6. As shown in FIG.
  • FIG. 3 shows a perspective view of one embodiment of the actuator.
  • FIG. 4 shows an explanatory view of the actuator of FIG. 3 as viewed from the side.
  • the actuator 3 includes a base portion 31 fixed to the valve seat plate 4, which will be described later, and a piezoelectric element 32 having one end connected to the mounting surface of the base portion 31 and extending in the first longitudinal direction.
  • the actuator 3 further includes a support portion 33 that is formed integrally with the base portion 31 and that is arranged so as to be aligned with the piezoelectric element 32 .
  • the support portion 33 extends in a second longitudinal direction that intersects with the first longitudinal direction.
  • the actuator 3 has an action portion 34 connected to the other end of the piezoelectric element 32 and the tip of the support portion 33 .
  • the action portion 34 is displaced in directions different from the first longitudinal direction and the second longitudinal direction as the piezoelectric element 32 expands and contracts.
  • the actuator 3 further includes a valve body 35 provided on one side surface of the action portion 34 in the direction of displacement on the distal end side thereof. The valve body 35 is driven by displacement of the action portion 34 .
  • the base portion 31 has at least one mounting hole 381, and at least one of the mounting holes 381 is arranged on the side where the support portion 33 is integrally provided in the second longitudinal direction.
  • the base portion 31 is fixed to the valve seat plate 4 with screws using mounting holes 381 arranged at least on the side where the support portion 33 is integrally provided.
  • the support portion 33 has a constricted portion 331 at an intermediate portion extending in the second longitudinal direction.
  • the support portion 33 further has a mounting hole 382 closer to the base portion 31 than the constricted portion 331 .
  • the support portion 33 is fixed to the valve seat plate 4 with screws using the mounting holes 382 .
  • the support portion 33 and the action portion 34 of the actuator 3 can be understood as elements constituting a displacement magnifying mechanism that magnifies the displacement of the piezoelectric element 32 and acts on the valve body 35 . That is, as the piezoelectric element 32 expands and contracts, the action portion 34 is displaced in directions different from the first longitudinal direction and the second longitudinal direction within a plane substantially parallel to a plane containing the first longitudinal direction and the second longitudinal direction (Fig. 4). In this case, by providing a constricted portion 331 in the intermediate portion extending in the second longitudinal direction of the support portion 33 , the actuator 3 can expand the displacement of the action portion 34 accompanying expansion and contraction of the piezoelectric element 32 .
  • the actuator 3 is provided with a valve body 35 on one side surface in the direction in which the action portion 34 is displaced. Therefore, the valve body 35 makes an arc motion in the displacement direction (X direction) together with the acting portion 34 with the constricted portion 331 provided in the support portion 33 as a fulcrum. Since the valve body 35 moves in an arc with the constricted portion 331 as a fulcrum relative to a valve seat, which will be described later, the trajectory is stabilized.
  • the constricted portion 331 provided in the support portion 33 is not essential. , even if the support portion 33 is not provided with the constricted portion 331, the action portion 34 and the valve body 35 can be displaced in the displacement direction (X direction).
  • the base portion 31 and the support portion 33 can be molded into an integrated member by punching out a metal material.
  • a metal material suitable as a material for the member integrating the base portion 31 and the support portion 33 is, for example, a stainless steel material including an Invar material. If the base portion 31 and the support portion 33 are integrally formed by punching out a metal material, the number of parts can be reduced and the assembly of the actuator 3 can be facilitated.
  • the base portion 31 and the support portion 33 may be formed from separate members.
  • the support portion 33 can be provided integrally with the base portion 31 by attaching the support portion 33 as a separate member to the base portion 31 .
  • connection member made of an aluminum block or the like can be attached to the attachment surface of the base portion 31 with the piezoelectric element 32 .
  • the material forming the connecting member is made of a material having a larger coefficient of linear expansion than that of the supporting portion 33 . If the piezoelectric element 32 is attached to the base portion 31 via a connecting member made of a material having a larger coefficient of linear expansion than the supporting portion 33, the influence of thermal expansion or thermal contraction of the piezoelectric element 32 due to temperature change is reduced. can be removed or eliminated.
  • the connecting member can also be attached between the piezoelectric element 32 and the action portion 34 instead of the attachment surface of the base portion 31 .
  • the acting portion 34 can be made of a lightweight material such as aluminum. Forming the action portion 34 from a lightweight material is preferable for displacing the action portion 34 . Also, the valve body 35 can be made of rubber, preferably lubricating rubber.
  • the actuator 3 can connect the base portion 31 and the action portion 34 with the compression member 36 .
  • the piezoelectric element is easily damaged by a load in the tensile direction.
  • the compression member 36 is used to connect the base portion 31 and the action portion 34, the piezoelectric element 32 can be compressed in the first longitudinal direction. Therefore, damage to the piezoelectric element 32 can be prevented.
  • FIG. 5 shows a perspective view of one embodiment of the valve seat plate.
  • FIG. 6 shows a perspective view of the valve seat plate of FIG. 5 with the actuator fixed.
  • FIG. 7 shows a side view of the valve seat plate of FIG.
  • a valve seat plate 4 shown in FIG. 5 is an example of a valve seat plate to which four actuators can be attached.
  • the valve seat plate 4 has a valve seat portion 41 in its central portion.
  • Two valve seats 42 with which the valve body 35 of the actuator 3 abuts are provided on each of the opposite surfaces corresponding to the front side and the rear side of the valve seat portion 41 .
  • the respective valve seats 42 are provided as a pair on both surfaces of the valve seat portion 41 so as to partially overlap in the width direction when viewed from the front.
  • Mounting portions 43 , 43 for the actuator 3 are formed on one side surface of the valve seat plate 4 . More specifically, the mounting portions 43 , 43 are formed on one side surface of the valve seat plate 4 at positions facing both surfaces of the valve seat portion 41 , that is, the front side and the rear side of the valve seat portion 41 . be done. Likewise, on the other side surface of the valve seat plate 4, mounting portions 44 for the actuator 3 are formed at positions facing both surfaces of the valve seat portion 41, respectively.
  • a plurality of discharge passages 45 are formed in the valve seat portion 41 , and one end of each discharge passage 45 opens to the valve seat surface of each valve seat 42 .
  • the other end of each discharge passage 45 opens to the front surface of the valve seat plate 4 (corresponding to the upper surface in FIGS. 5 to 7).
  • the valve seat plate 4 is integrally provided with a lid member 46 for closing the opening of the rear surface of the valve body 2 .
  • valve bodies 35 of the four actuators 3 are arranged so as to face the respective valve seats 42 with respect to the mounting portions 43 and 44 of the valve seat plate 4 .
  • each actuator 3 is fixed to the valve seat plate 4 with screws.
  • the valve seat plate 4 is installed inside the valve body 2 through an opening on the rear surface of the valve body 2 with the four actuators 3 fixed thereto. Fixed. When the front surface of the valve seat plate 4 is fixed, each discharge passage 45 opening on the front surface communicates with each gas discharge port 22 opening on the front surface of the valve body 2 . Also, the valve seat plate 4 has the cover member 46 fixed to the valve main body 2 from behind by screws. As a result, the opening on the rear surface of the valve body 2 is closed.
  • the piezoelectric valve 1 when the piezoelectric element 32 of the actuator 3 is energized in the closed state, the piezoelectric element 32 expands. As the piezoelectric element 32 expands, the action portion 34 is displaced, and the valve body 35 is separated from the valve seat 42 to open the valve. As a result, the piezoelectric valve 1 opens the compressed gas supplied from the gas supply port to the valve body 2 to the front surface of the valve body 2 through the discharge path 45 formed in the valve seat portion 41 of the valve seat plate 4. It is discharged from the gas discharge port 22 .
  • the piezoelectric valve 1 when the piezoelectric element 32 of the actuator 3 is deenergized, the piezoelectric element 32 contracts, the action portion 34 displaces in the opposite direction, and the valve body 35 is seated on the valve seat 42 . to close the valve.
  • FIG. 8 shows an explanatory view of the valve seat portion that constitutes one embodiment of the valve seat plate, viewed from the front side.
  • FIG. 9 shows an explanatory view of the valve seat portion of FIG. 8 viewed from the side.
  • each valve seat 42 provided on the valve seat portion 41 of the valve seat plate 4 has two annular projections 421, and each valve seat has a discharge passage 45 opening in each annular projection 421. have a face.
  • the two annular protrusions 421 have the discharge passages 45 opening on the top surfaces of the truncated elliptical cones.
  • the inclination angle of the truncated elliptical cone can be, for example, 60 degrees.
  • the two annular protrusions 421 are arranged side by side in the width direction of the valve seat 42 , and the discharge passage 45 extends in the two annular protrusions 421 along the length direction perpendicular to the width direction of the valve seat 42 . It opens like a slit.
  • the valve seat 42 has a valve seat surface in which the discharge passages 45 are opened in the two annular protrusions 421 respectively. Therefore, even if the length of the valve seat 42 is shortened, the two annular projections 421 of the piezoelectric valve 1 can lengthen the circumference of the opening in the discharge passage 45 as a whole.
  • the two annular projections 421 are arranged side by side in the width direction of the valve seat 42 , and each discharge passage 45 extends in the length direction orthogonal to the width direction of the valve seat 42 .
  • Slit-like openings are formed in the two annular protrusions 421 along the same. Therefore, even if the length of the valve seat 42 is shortened, the two annular protrusions 421 of the piezoelectric valve 1 can increase the overall peripheral length of the opening in each discharge passage 45 .
  • the piezoelectric valve 1 of the present embodiment when the valve body 35 provided in the actuator 3 moves toward and away from the valve seat 42 provided in the valve seat plate 4 by circular motion, the valve seat 42 Even if the length of is shortened, it is possible to secure the required discharge amount of the compressed gas when the valve is opened.
  • the valve seat 42 has a valve seat surface in which the discharge passage 45 is opened in each of the two annular projections 421, and the two annular projections 421 are each formed of an elliptical cone.
  • a discharge channel 45 opens into each of the top surfaces of the pedestals. Therefore, the valve seat surface has an inclined surface around the two annular protrusions 421, and the piezoelectric valve 1 has resistance when taking in compressed gas from around the two annular protrusions 421 into the opening of the discharge passage 45 when the valve is opened. can be made smaller.
  • the piezoelectric valve 1 of the present embodiment when the valve body 35 provided in the actuator 3 moves toward and away from the valve seat 42 provided in the valve seat plate 4 by circular motion, the valve seat 42 Even if the length of is shortened, it is possible to secure the required discharge amount of the compressed gas when the valve is opened.
  • FIG. 10 shows a cross-sectional view of the valve seat portion 41 viewed from the cross-section AA in FIG.
  • FIG. 11 shows another cross-sectional view of the valve seat portion 41 as seen from the cross-section BB of FIG.
  • the discharge passage 45 is composed of valve seat side passages 451 opening in slits in the two annular projections 421 and the respective valve seat side passages 451 orthogonally intersecting and communicating with each other on the front surface of the valve seat plate 4 . It has one open front side channel 452 .
  • the front side channel 452 has a channel cross-sectional area larger than the sum of the channel cross-sectional areas (axis-perpendicular cross-sectional areas) of the valve seat side channels 451 .
  • each valve seat side channel 451 and the front side channel 452 intersect orthogonally is illustrated, but if both intersect and communicate, they do not necessarily need to intersect orthogonally. .
  • the inner surface of the front side channel 452 has a convex shape toward the valve seat surface side at the communicating portions 46 where the valve seat side channels 451 intersect, and a concave shape between the communicating portions 46. It is said that
  • the discharge passage 45 communicates with the valve seat side passages 451 which are slit-like openings in the two annular protrusions 421 and the valve seat side passages 451 intersect and communicate with each other. It has one front side channel 452 that opens to the front surface of the valve seat plate 4, and the inner surface of the front side channel 452 is convex toward the valve seat surface side at the communicating portion 46 where the valve seat side channels 451 intersect.
  • each valve-seat-side channel 451 is shortened, and the piezoelectric valve 1 can reduce the resistance in the valve-seat-side channel 451 when taking in compressed gas into the discharge channel 45 when the valve is opened. can.
  • the inner surface of the front side flow path 452 has a concave shape between the communicating portions 46 from the valve seat surface side.
  • the depth L2 of the groove 47 between the annular protrusions 421 can be increased to form a large air pool, so that the piezoelectric valve 1 can secure the capacity of the compressed gas taken into the valve seat side flow path 451 when the valve is opened. can do.
  • the piezoelectric valve 1 of the present embodiment when the valve body 35 provided in the actuator 3 moves toward and away from the valve seat 42 provided in the valve seat plate 4 by circular motion, the valve seat 42 Even if the length of is shortened, it is possible to secure the required discharge amount of the compressed gas when the valve is opened.
  • the two annular protrusions 421 have the valve seat side flow path 451 (discharge path 45) opening on each top surface of the truncated elliptical cone.
  • the annular convex portion 421 may be such that the valve seat side passage 451 (discharge passage 45) opens to each top surface of a frustum of another shape such as a truncated pyramid. can do.
  • valve seat 42 is provided with two annular projections 421, but the present invention is not limited to this, and three or more annular projections may be provided.
  • the valve seat 42 can also be provided with one annular protrusion 421 . Even when only one annular projection 421 is provided on the valve seat 42, the resistance when the compressed gas is taken into the opening of the discharge passage 45 from around the annular projection 421 when the valve is opened can be reduced. Therefore, even when the valve body 35 provided on the actuator 3 moves in and out of contact with the valve seat 42 provided on the valve seat plate 4 by arcuate motion and the length of the valve body and the valve seat is shortened, the piezoelectric valve 1 can ensure the required discharge amount of the compressed gas when the valve is opened.
  • the piezoelectric valve 1 has the valve body 35 seated on the valve seat 42 while no voltage is applied to the piezoelectric element 32 .
  • the piezoelectric valve 1 is not limited to such a configuration.
  • Body 35 can also be spaced from valve seat 42 .
  • the piezoelectric valve 1 has a valve seat plate 4 to which four actuators 3 are fixed inside the valve body 2, and four gas discharge ports 22 open on the front surface of the valve body 2. and
  • the piezoelectric valve 1 is not limited to such a configuration, and the valve body 2 may be provided with a valve seat plate to which one or more actuators are fixed.
  • valve seat plate 4 to which a total of four actuators 3 can be attached, two on each side has been described as an example.
  • a valve seat plate to which two actuators 3 can be attached only on one side or a valve seat plate to which one actuator 3 can be attached only on one side can be used for the piezoelectric valve 1 .
  • a piezoelectric valve according to the present invention includes an actuator that has a valve body and drives it, a valve seat plate that has a valve seat that contacts and separates from the valve body and a discharge path and fixes the actuator, and a valve seat plate. It can be used in piezoelectric valves with a valve body or body case.
  • Valve body (body case) 21 Gas supply port 22 Gas discharge port 3 Actuator 31 Base portion 32 Piezoelectric element 33 Support portion 331 Constricted portion 34 Action portion 35 Valve body 36 Compression member 381 Mounting hole 382 Mounting hole 4 Valve seat plate 41 Valve seat portion 42 Valve seat 421 Annular convex Part 43 Mounting part 44 Mounting part 45 Discharge path 451 Valve seat side flow path 452 Front side flow path (main flow path) 46 Communicating portion 47 Groove 6 Cover body L1 Valve seat side channel length L2 Groove depth

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne une soupape piézoélectrique comprenant un actionneur qui comporte un corps de soupape et qui entraîne le corps de soupape, une plaque de siège de soupape qui comporte un trajet de décharge et un siège de soupape qui entre en contact avec le corps de soupape et se sépare de celui-ci, et qui fixe l'actionneur, et un boîtier de corps principal qui reçoit la plaque de siège de soupape, le corps de soupape disposé sur l'actionneur entrant en contact avec le siège de soupape disposé sur la plaque de siège de soupape et se séparant de celui-ci. Le siège de soupape comporte une face de siège de soupape dans laquelle une extrémité du trajet de décharge est ouverte au niveau de chaque partie parmi une ou plusieurs parties saillantes annulaires ; dans lesdites parties saillantes annulaires, une extrémité du trajet de décharge est ouverte au niveau de chaque partie parmi une ou plusieurs faces supérieures tronconiques ; et le corps de soupape entre en contact avec lesdites parties saillantes annulaires de la face de siège de soupape et se sépare de celle-ci.
PCT/JP2022/030822 2021-08-16 2022-08-12 Soupape piézoélectrique WO2023022115A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021132431A JP2023026958A (ja) 2021-08-16 2021-08-16 圧電式バルブ
JP2021-132431 2021-08-16

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WO2023022115A1 true WO2023022115A1 (fr) 2023-02-23

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PCT/JP2022/030822 WO2023022115A1 (fr) 2021-08-16 2022-08-12 Soupape piézoélectrique

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JP (1) JP2023026958A (fr)
TW (1) TW202309425A (fr)
WO (1) WO2023022115A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074534A (ja) * 1993-06-18 1995-01-10 Hitachi Metals Ltd 自動調節弁
JP2017106593A (ja) * 2015-12-11 2017-06-15 株式会社ノーリツ 弁装置およびこれを備えた給湯装置
WO2021141095A1 (fr) * 2020-01-08 2021-07-15 有限会社メカノトランスフォーマ Mécanisme d'amplification de déplacement, actionneur, dispositif de polissage, dispositif de traitement de composant électronique, distributeur et clapet d'aération

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074534A (ja) * 1993-06-18 1995-01-10 Hitachi Metals Ltd 自動調節弁
JP2017106593A (ja) * 2015-12-11 2017-06-15 株式会社ノーリツ 弁装置およびこれを備えた給湯装置
WO2021141095A1 (fr) * 2020-01-08 2021-07-15 有限会社メカノトランスフォーマ Mécanisme d'amplification de déplacement, actionneur, dispositif de polissage, dispositif de traitement de composant électronique, distributeur et clapet d'aération

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