WO2014188915A1 - バルブ、流体制御装置 - Google Patents
バルブ、流体制御装置 Download PDFInfo
- Publication number
- WO2014188915A1 WO2014188915A1 PCT/JP2014/062771 JP2014062771W WO2014188915A1 WO 2014188915 A1 WO2014188915 A1 WO 2014188915A1 JP 2014062771 W JP2014062771 W JP 2014062771W WO 2014188915 A1 WO2014188915 A1 WO 2014188915A1
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- WIPO (PCT)
- Prior art keywords
- valve
- diaphragm
- valve housing
- hole
- housing
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1085—Valves; Arrangement of valves having means for limiting the opening height
-
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
- F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0235—Valves specially adapted therefor
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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
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0236—Diaphragm cut-off apparatus
-
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
- F04B53/1062—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at two or more points at its periphery
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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
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0073—Fabrication methods specifically adapted for microvalves
-
- 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
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0073—Fabrication methods specifically adapted for microvalves
- F16K2099/008—Multi-layer fabrications
-
- 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
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0082—Microvalves adapted for a particular use
- F16K2099/0086—Medical applications
-
- 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
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K99/0001—Microvalves
- F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
- F16K99/0015—Diaphragm or membrane valves
Definitions
- the present invention relates to a valve for preventing a back flow of fluid and a fluid control apparatus including the valve.
- Patent Document 1 discloses a fluid control device including a valve.
- This fluid control device includes a piezoelectric pump and a valve.
- the valve is connected to the piezoelectric pump by joining the top surface of the piezoelectric pump to the bottom surface of the valve.
- the valve is provided with a cuff connection port that communicates with the cuff armband rubber tube.
- the fluid control device is connected to the cuff by attaching the rubber band of the cuff to the cuff connection port of the valve.
- the valve includes a second valve casing, a diaphragm made of a rectangular thin film, and a first valve casing, and has a structure in which they are laminated in order.
- valve of Patent Document 1 ensure a sealing property between the second valve housing and the diaphragm and between the diaphragm and the first valve housing so that air does not leak from the inside of the valve.
- FIG. 10 is a cross-sectional view of a main part of the fluid control device 900 according to the first comparative example.
- FIG. 11 is an exploded perspective view of the valve 901 shown in FIG. 12 is a cross-sectional view of a main part of the valve 901 shown in FIG. 11 and 12 show the Z-axis direction, the Y-axis direction, and the X-axis direction.
- the Z-axis direction has shown the lamination direction of the member which comprises the valve
- the X-axis direction indicates the arrangement direction of the check valve 160, the communication path 135, and the exhaust valve 170.
- the Y-axis direction indicates a direction perpendicular to the Z-axis direction and the X-axis direction.
- the valve 901 includes a second valve housing 192, a second sealing material 952 made of a rectangular thin film, a diaphragm 920 made of a rectangular thin film, and a rectangular thin film.
- the first seal member 951 and the first valve housing 191 are provided, and have a structure in which they are sequentially stacked.
- the first valve housing 191 includes a second vent hole 112 communicating with the cuff 109, a third vent hole 113 communicating with the outside of the fluid control device 100, and a third vent hole 113.
- the valve seat 139 protruded from the periphery to the diaphragm 920 side, and six openings 182.
- the valve seat 139 has a cylindrical shape having a third vent hole 113 at the center.
- the second valve housing 192 includes a first vent hole 110 communicating with the discharge hole 56 of the piezoelectric pump 10 and a first vent hole 111 communicating with the discharge hole 55 of the piezoelectric pump 10. And a cylindrical valve seat 138 projecting toward the diaphragm 920 and six first projecting portions 180 facing the six openings 182.
- the diaphragm 920 is provided with a circular hole 121 at the center of the region facing the valve seat 138.
- the diameter of the hole 121 is smaller than the diameter of the surface of the valve seat 138 that contacts the diaphragm 920.
- the diaphragm 920 is sandwiched between the first valve housing 191 and the second valve housing 192 and contacts the valve seat 139 and the first valve housing 191 and the second valve 138 so that the periphery of the hole 121 contacts the valve seat 138. It is fixed to the valve housing 192.
- the valve seat 138 is provided in the second valve housing 192 so as to pressurize the periphery of the hole 121 in the diaphragm 920.
- Diaphragm 920 divides the inside of the first valve housing 191 and the second valve housing 192.
- Diaphragm 920 has a ring-shaped first lower valve chamber 131 that communicates with first vent hole 111 and a cylindrical first upper valve chamber 133 that communicates with second vent hole 112 via communication passage 135.
- the stop valve 160 is configured together with the first valve housing 191 and the second valve housing 192.
- the diaphragm 920 includes a cylindrical second lower valve chamber 132 that communicates with the first vent hole 110, and a ring-shaped second upper valve chamber 134 that communicates with the first upper valve chamber 133 via the communication path 135.
- the exhaust valve 170 having the above is configured together with the first valve housing 191 and the second valve housing 192.
- the shape of each valve chamber is a shape when seen in a plan view from a direction perpendicular to the diaphragm 920.
- the check valve 160, the communication path 135, and the exhaust valve 170 are disposed along the X-axis direction.
- the six openings 182 of the first valve housing 191 are provided closer to the peripheral side than the first lower valve chamber 131 and the second lower valve chamber 132 in plan view from the X-axis direction. Of the six openings 182, three of these openings 182 are arranged along the X-axis direction. The other three openings 182 are in parallel to the three openings 182 described above on the opposite side of the three openings 182 described above with the first lower valve chamber 131 and the second lower valve chamber 132 interposed therebetween. Are arranged along the X-axis direction.
- the six first protrusions 180 of the second valve housing 192 are provided on the peripheral side of the first upper valve chamber 133 and the second upper valve chamber 134 in plan view from the X-axis direction.
- the six first protrusions 180 are disposed so as to face the six openings 182.
- the first sealing material 951 is provided with second through holes 156A to 156C in regions facing the first upper valve chamber 133, the communication passage 135, and the second upper valve chamber 134.
- the second through hole 156A has, for example, a circular shape whose central axis is substantially the same as that of the first upper valve chamber 133.
- the second through hole 156B has, for example, a circular shape whose central axis is substantially the same as that of the second upper valve chamber 134.
- first through holes 155A to 155C are provided in regions facing the first lower valve chamber 131 and the second lower valve chamber 132.
- the first through-hole 155A has, for example, a circular shape whose central axis is substantially the same as that of the first lower valve chamber 131.
- the first through hole 155B has, for example, a circular shape whose central axis is substantially the same as that of the second lower valve chamber 132.
- the second valve housing 192, the second sealing material 952, the diaphragm 920, the first sealing material 951, and the first valve housing 191 are stacked, and the six first protrusions 180 are fitted into the six openings 182. Match. Accordingly, the diaphragm 920 is sandwiched between the first valve housing 191 and the second valve housing 192 via the first seal material 951 and the second seal material 952.
- the laminated body which consists of the 2nd valve housing
- the heat caulking is performed on the tip portions of the six first projecting portions 180. Thereby, the front-end
- valve 901 as described above, further cost reduction is required.
- the diaphragm 920 needs to use a highly reliable material, which contributes to the high manufacturing cost of the valve 901.
- the inventor of the present application is more than the check valve 160 and the exhaust valve 170 in plan view from the X-axis direction of the first sealing material 951, the diaphragm 920, and the second sealing material 952 that do not directly contribute to the function as a valve.
- the first valve housing 191 and the second valve housing 192 are the first seals in a portion inside the first protrusion 180 in plan view from the X-axis direction.
- the diaphragm 120 is sandwiched between the material 151 and the second seal material 152, but nothing is sandwiched between the first valve housing 191 and the second valve housing 192 in the portion outside the first protrusion 180. Not done.
- the warpage of the valve 901 also affects the warpage of the piezoelectric pump 10. Therefore, there is a problem that the performance of the piezoelectric pump 10 is lowered.
- An object of the present invention is to provide a valve capable of reducing the manufacturing cost of the valve as compared with the conventional one without degrading the performance of the valve as compared with the conventional one, and a fluid control device including the valve.
- the valve of the present invention has the following configuration in order to solve the above problems.
- a diaphragm provided with a hole; A first sealing material provided on one main surface of the diaphragm; A first valve housing joined to the diaphragm via the first sealing material, the first valve chamber being located on one main surface side of the diaphragm and communicating with the first hole.
- first valve housing having a plurality of openings located outside the first valve chamber, A second seal member provided on the other main surface of the diaphragm; and a second valve housing joined to the diaphragm via the second seal material, the second hole and the other main surface side of the diaphragm
- a second valve housing having a second valve chamber communicating with the second hole and a plurality of first protrusions positioned outside the second valve chamber, In the diaphragm, the plurality of first projecting portions are fitted into the plurality of openings, so that the first valve housing and the second valve housing are interposed between the first seal member and the second seal member.
- the periphery of the hole in the diaphragm is in contact with the second valve housing in the second valve chamber, and the hole is covered,
- the outer periphery of each of the first seal member, the diaphragm, and the second seal member is smaller than the outer periphery of the first valve housing and the second valve housing, and is provided inside the plurality of first protrusions.
- At least one of the first valve housing and the second valve housing has a plurality of second projecting portions located outside the plurality of first projecting portions.
- the valve in this configuration has a structure in which a first valve housing, a first sealing material, a diaphragm, a second sealing material, and a second valve housing are laminated. And in this structure, the outer periphery of a diaphragm is smaller than the outer periphery of a 1st valve rod body and a 2nd valve rod body, and it is provided inside the said some 1st protrusion part. Therefore, compared with the valve 901 (see FIG. 11) of the first comparative example in which the outer periphery of the diaphragm has the same structure as the outer periphery of the first valve housing and the second valve housing, this configuration can reduce the use area of the diaphragm.
- first valve housing and the second valve housing are interposed between the first sealing material and the second sealing material in a portion inward of the first projecting portion in plan view from the X-axis direction. Pinch the diaphragm.
- a plurality of second projecting portions are located between the first valve housing and the second valve housing in a portion outside the first projecting portion in plan view from the X-axis direction.
- a laminated body composed of the first valve housing, the first seal material, the diaphragm, the second seal material, and the second valve housing is placed on a table, and heat is applied to the distal ends of the plurality of first protrusions. Even if caulking is performed, the plurality of second projecting portions contact the first valve housing or the second valve housing, and the first valve housing and the outer portion of the second valve housing are warped. This can be suppressed. That is, with this configuration, it is possible to suppress air leakage from the inside of the valve.
- the manufacturing cost of the valve can be reduced as compared with the conventional one without degrading the performance of the valve as compared with the conventional one.
- the height of the plurality of second protrusions is lower than the height of the plurality of first protrusions.
- heat caulking is performed on the front end portions of the plurality of first protrusions that protrude toward the second valve housing rather than the plurality of second protrusions.
- the height of the plurality of second protrusions is equal to the sum of the thickness of the first sealing material, the thickness of the diaphragm, and the thickness of the second sealing material.
- the thickness of the first sealing material and the diaphragm are between the portion outside the first protrusion in the first valve housing and the portion outside the first protrusion in the second valve housing.
- a plurality of second protrusions having a height equal to the sum of the thickness and the thickness of the second sealing material are located.
- the plurality of second projecting portions come into contact with the first valve housing or the second valve housing. It is possible to further suppress the warp of the outer portion of the two-valve housing from the first protrusion. That is, with this configuration, it is possible to further suppress air leakage from the inside of the valve.
- the manufacturing cost of the valve can be reduced as compared with the conventional one without degrading the performance of the valve as compared with the conventional one.
- the fluid control apparatus of the present invention has the following configuration in order to solve the above-mentioned problems.
- a pump provided with a discharge hole; A valve according to any one of (1) to (3) above, The first hole of the first valve housing is connected to a fluid reservoir for storing fluid; The second hole of the second valve housing is connected to the discharge hole of the pump.
- the fluid control device including the valve has the same effect.
- the manufacturing cost of the valve can be reduced as compared with the conventional one without degrading the performance of the valve as compared with the conventional one.
- FIG. 1 It is explanatory drawing which shows the flow of the air of the fluid control apparatus 100 immediately after the piezoelectric pump 10 shown in FIG. 1 stops a drive.
- the valve 101 according to the embodiment of the present invention the valve 901 according to the first comparative example, and the valve 501 according to the second comparative example, the position in the second valve housing 192 and the warpage amount of the second valve housing 192 It is a figure which shows a relationship.
- FIG. 1 is a cross-sectional view of a main part of a fluid control apparatus 100 according to an embodiment of the present invention.
- the fluid control device 100 includes a piezoelectric pump 10 and a valve 101.
- the fluid control device 100 is a device that measures the blood pressure of a subject.
- the upper surface of the piezoelectric pump 10 is joined to the lower surface of the valve 101, whereby the valve 101 is connected to the piezoelectric pump 10.
- the valve 101 is provided with a cuff connection port 106A that communicates with the armband rubber tube 109A of the cuff 109.
- a cuff connection port 106A that communicates with the armband rubber tube 109A of the cuff 109.
- the cuff 109 corresponds to the “fluid reservoir” of the present invention.
- FIG. 2 is an exploded perspective view of the piezoelectric pump 10 shown in FIG.
- the piezoelectric pump 10 includes a substrate 91, a flexible plate 51, a spacer 53A, a reinforcing plate 43, a vibration plate unit 60, a piezoelectric element 42, a spacer 53B, an electrode conduction plate 70, a spacer 53C, and a lid plate 54 in order. It has a laminated structure.
- the substrate 91, the flexible plate 51, the spacer 53A, a part of the diaphragm unit 60, the spacer 53B, the electrode conduction plate 70, the spacer 53C, and the lid plate 54 constitute a pump housing 80.
- the internal space of the pump housing 80 corresponds to the pump chamber 45.
- the diaphragm unit 60 includes a diaphragm 41, a frame plate 61, a connecting portion 62, and an external terminal 63.
- the diaphragm unit 60 is formed by punching a metal plate.
- a frame plate 61 is provided around the vibration plate 41.
- the frame plate 61 is provided with an external terminal 63 for electrical connection.
- the diaphragm 41 is connected to the frame plate 61 by a connecting portion 62.
- the connecting part 62 is formed in a thin ring shape, for example.
- the connecting portion 62 has an elastic structure having a small spring constant elasticity.
- the diaphragm 41 is elastically supported at two points with respect to the frame plate 61 by the two connecting portions 62. Therefore, the bending vibration of the diaphragm 41 is hardly disturbed. That is, the peripheral part of the piezoelectric actuator 40 (of course, the central part) is not substantially restrained.
- connection part 62 is provided in two places, you may provide in three or more places.
- the connecting portion 62 does not disturb the vibration of the piezoelectric actuator 40, but has some influence on the vibration of the piezoelectric actuator 40. Therefore, for example, by providing the connecting portions 62 at three locations, more natural support is possible, and cracking of the piezoelectric element 42 can also be prevented.
- a piezoelectric element 42 is provided on the upper surface of the disc-shaped diaphragm 41.
- a reinforcing plate 43 is provided on the lower surface of the vibration plate 41.
- the diaphragm 41, the piezoelectric element 42, and the reinforcing plate 43 constitute a disk-shaped piezoelectric actuator 40.
- the piezoelectric element 42 is made of, for example, lead zirconate titanate ceramic.
- the vibration plate 41 may be formed of a metal plate having a larger linear expansion coefficient than the piezoelectric element 42 and the reinforcing plate 43, and may be heat-cured at the time of bonding. Accordingly, an appropriate compressive stress can be left in the piezoelectric element 42 without warping the entire piezoelectric actuator 40, and the piezoelectric element 42 can be prevented from cracking.
- the diaphragm 41 may be made of a material having a large linear expansion coefficient such as phosphor bronze (C5210) or stainless steel SUS301, and the reinforcing plate 43 may be made of 42 nickel, 36 nickel, or stainless steel SUS430.
- the diaphragm 41, the piezoelectric element 42, and the reinforcing plate 43 may be arranged in the order of the piezoelectric element 42, the reinforcing plate 43, and the diaphragm 41 from the top. Also in this case, the linear expansion coefficient is adjusted by setting the materials constituting the reinforcing plate 43 and the diaphragm 41 so that an appropriate compressive stress remains in the piezoelectric element 42.
- a spacer 53B is provided on the upper surface of the frame plate 61.
- the spacer 53B is made of resin.
- the thickness of the spacer 53B is the same as or slightly thicker than that of the piezoelectric element.
- the frame plate 61 electrically insulates the electrode conduction plate 70 and the diaphragm unit 60 from each other.
- An electrode conduction plate 70 is provided on the upper surface of the spacer 53B.
- the electrode conduction plate 70 is made of metal.
- the electrode conduction plate 70 includes a frame portion 71 that is opened in a substantially circular shape, an internal terminal 73 that projects into the opening, and an external terminal 72 that projects outward.
- the tip of the internal terminal 73 is joined to the surface of the piezoelectric element 42 with solder.
- solder By setting the position to be joined by solder to a position corresponding to the bending vibration node of the piezoelectric actuator 40, the vibration of the internal terminal 73 is suppressed.
- a spacer 53 ⁇ / b> C is provided on the upper surface of the electrode conduction plate 70.
- the spacer 53C is made of resin.
- the spacer 53C has the same thickness as the piezoelectric element 42.
- the spacer 53 ⁇ / b> C is a spacer for preventing the solder portion of the internal terminal 73 from contacting the lid plate 54 when the piezoelectric actuator 40 is vibrating.
- the surface of the piezoelectric element 42 is prevented from excessively approaching the cover plate 54 and the vibration amplitude is prevented from being reduced by air resistance. Therefore, the thickness of the spacer 53 ⁇ / b> C may be the same as that of the piezoelectric element 42.
- a lid plate 54 is provided on the upper surface of the spacer 53C.
- the lid plate 54 is provided with discharge holes 55 and 56.
- the lid plate 54 covers the upper part of the piezoelectric actuator 40.
- a spacer 53A is provided on the lower surface of the diaphragm unit 60. That is, the spacer 53 ⁇ / b> A is inserted between the upper surface of the flexible plate 51 and the lower surface of the diaphragm unit 60.
- the spacer 53 ⁇ / b> A has a thickness obtained by adding about several tens of ⁇ m to the thickness of the reinforcing plate 43.
- the spacer 53A is a spacer for preventing the piezoelectric actuator 40 from coming into contact with the flexible plate 51 when the piezoelectric actuator 40 is vibrating.
- a flexible plate 51 is provided on the lower surface of the spacer 53A.
- a suction hole 52 is provided at the center of the flexible plate 51.
- a substrate 91 is provided on the lower surface of the flexible plate 51.
- a cylindrical opening 92 is formed at the center of the substrate 91.
- the flexible plate 51 includes a fixed portion 57 fixed to the substrate 91 and a movable portion 58 that is located on the center side of the fixed portion 57 and faces the opening 92.
- the movable portion 58 can vibrate at substantially the same frequency as that of the piezoelectric actuator 40 due to air pressure fluctuation accompanying vibration of the piezoelectric actuator 40.
- the natural frequency of the movable part 58 is designed to be the same as or slightly lower than the drive frequency of the piezoelectric actuator 40.
- the vibration is designed so that the vibration phase of the flexible plate 51 is delayed (for example, delayed by 90 °) from the vibration phase of the piezoelectric actuator 40, the thickness variation of the gap between the flexible plate 51 and the piezoelectric actuator 40 is substantially reduced. Increase.
- the piezoelectric actuator 40 bends and vibrates concentrically. Further, the movable portion 58 of the flexible plate 51 also vibrates with the vibration of the piezoelectric actuator 40. As a result, the piezoelectric pump 10 sucks air into the pump chamber 45 via the opening 92 and the suction hole 52. Further, the piezoelectric pump 10 discharges air in the pump chamber 45 from the discharge holes 55 and 56.
- the peripheral portion of the piezoelectric actuator 40 is not substantially fixed. Therefore, according to the piezoelectric pump 10, there is little loss due to vibration of the piezoelectric actuator 40, and a high discharge pressure and a large discharge flow rate can be obtained while being small and low-profile.
- valve 101 Next, the structure of the valve 101 will be described in detail with reference to FIGS. 1 and 3 to 6.
- FIG. 3 and 4 are exploded perspective views of the valve 101 shown in FIG.
- FIG. 3 is an exploded perspective view of the valve 101 as viewed from the upper surface side to which the cuff 109 is connected
- FIG. 4 is an exploded perspective view of the valve 101 as viewed from the bottom surface side to which the piezoelectric pump 10 is joined.
- FIG. 5 is a bottom view of the second valve housing 192 constituting the valve 101 shown in FIG. 6 is a cross-sectional view of a main part of the valve 101 shown in FIG.
- FIGS. 3, 5, and 6 show the Z-axis direction, the Y-axis direction, and the X-axis direction.
- a Z-axis direction indicates a stacking direction of members constituting the valve 101.
- the X-axis direction indicates the arrangement direction of the check valve 160, the communication path 135, and the exhaust valve 170.
- the Y-axis direction indicates a direction perpendicular to the Z-axis direction and the X-axis direction.
- first hole corresponds to the second vent hole 112.
- second hole corresponds to the first vent holes 110 and 111.
- the “first valve chamber” of the present invention corresponds to the first upper valve chamber 133 and the second upper valve chamber 134.
- second valve chamber corresponds to the first lower valve chamber 131 and the second lower valve chamber 132.
- the valve 101 includes a second valve housing 192, a second sealing material 152 made of a rectangular thin film, and a diaphragm 120 made of a rectangular thin film.
- the first sealing member 151 made of a rectangular thin film and the first valve housing 191 are provided and have a structure in which they are sequentially laminated.
- the first valve housing 191 includes a second vent hole 112 that communicates with the cuff 109, a third vent hole 113 that communicates with the outside of the fluid control device 100, and a third It has a valve seat 139 protruding from the periphery of the vent hole 113 to the diaphragm 120 side, and six openings 182.
- the first valve housing 191 is made of resin, for example.
- the valve seat 139 has a cylindrical shape having a third vent hole 113 at the center.
- the six openings 182 of the first valve housing 191 are provided on the peripheral side of the first lower valve chamber 131 and the second lower valve chamber 132, which will be described later, in plan view from the X-axis direction. Of the six openings 182, three of these openings 182 are arranged along the X-axis direction. The other three openings 182 are in parallel to the three openings 182 described above on the opposite side of the three openings 182 described above with the first lower valve chamber 131 and the second lower valve chamber 132 interposed therebetween. Are arranged along the X-axis direction.
- the upper surface of the piezoelectric pump 10 is bonded to the bottom surface of the second valve housing 192 as shown in FIG.
- the second valve housing 192 communicates with the first vent hole 110 that communicates with the discharge hole 56 of the piezoelectric pump 10 and the discharge hole 55 of the piezoelectric pump 10.
- the first vent hole 111, the cylindrical valve seat 138 projecting toward the diaphragm 120, and the six first projecting portions 180 facing the six opening portions 182.
- the second valve housing 192 is made of resin, for example.
- the six first protrusions 180 of the second valve housing 192 are provided on the peripheral side of the first upper valve chamber 133 and the second upper valve chamber 134, which will be described later, in plan view from the X-axis direction.
- the second valve housing 192 has six second projecting portions 181 on the peripheral side from the six first projecting portions 180 in plan view from the X-axis direction.
- the six second projecting portions 181 include the first seal member 151, the diaphragm 120, and the second seal in plan view from the X-axis direction in a state where the six first projecting portions 180 are fitted into the six opening portions 182. It is provided on the peripheral side of the material 152.
- the diaphragm 120 is provided with a circular hole 121 at the center of the region facing the valve seat 138.
- the diameter of the hole 121 is smaller than the diameter of the surface of the valve seat 138 that contacts the diaphragm 120.
- the outer periphery of the diaphragm 120 is smaller than the outer periphery of each of the first valve housing 191 and the second valve housing 192.
- the diaphragm 120 is made of rubber such as EPDM (ethylene propylene diene rubber) or silicone.
- the diaphragm 120 is sandwiched between the first valve casing 191 and the second valve casing 192 via the first seal member 151 and the second seal member 152 by fitting the six first protrusions 180 into the six openings 182. Has been.
- the diaphragm 120 has a second valve in plan view from the X-axis direction and a region inside the six openings 182 in the first valve housing 191 in plan view from the X-axis direction.
- the housing 192 covers the area inside the six first protrusions 180, contacts the valve seat 138, and the periphery of the hole 121 contacts the valve seat 138.
- the valve seat 138 is provided in the second valve housing 192 so as to pressurize the periphery of the hole 121 in the diaphragm 120.
- the diaphragm 120 divides the inside of the first valve housing 191 and the second valve housing 192.
- the diaphragm 120 has a ring-shaped first lower valve chamber 131 that communicates with the first vent hole 111 and a columnar first upper valve chamber 133 that communicates with the second vent hole 112 via the communication passage 135.
- the stop valve 160 is configured together with the first valve housing 191 and the second valve housing 192.
- the diaphragm 120 includes a cylindrical second lower valve chamber 132 that communicates with the first vent hole 110, and a ring-shaped second upper valve chamber 134 that communicates with the first upper valve chamber 133 via the communication path 135.
- the exhaust valve 170 having the above is configured together with the first valve housing 191 and the second valve housing 192.
- each valve chamber is a shape when seen in a plan view from a direction perpendicular to the diaphragm 120.
- the check valve 160, the communication path 135, and the exhaust valve 170 are provided along the X-axis direction.
- the diameters of the first lower valve chamber 131, the second lower valve chamber 132, the first upper valve chamber 133, and the second upper valve chamber 134 are, for example, 7.0 mm.
- the diameter of the surface of the valve seat 138 that contacts the diaphragm 120 is, for example, 1.5 mm.
- the first sealing material 151 is provided with second through holes 156A to 156C in regions facing the first upper valve chamber 133, the communication passage 135, and the second upper valve chamber 134.
- the second through hole 156A has, for example, a circular shape whose central axis is substantially the same as that of the first upper valve chamber 133.
- the second through hole 156B has, for example, a circular shape whose central axis is substantially the same as that of the second upper valve chamber 134.
- each of the second through holes 156A and 156B is, for example, 6.6 mm. That is, the outer periphery of the first sealing material 151 is smaller than the outer periphery of each of the first valve housing 191 and the second valve housing 192.
- the first sealing material 151 is made of, for example, a double-sided tape or an adhesive.
- first through holes 155 ⁇ / b> A and 155 ⁇ / b> B are provided in the second sealing material 152 in regions facing the first lower valve chamber 131 and the second lower valve chamber 132.
- the first through-hole 155A has, for example, a circular shape whose central axis is substantially the same as that of the first lower valve chamber 131.
- the first through hole 155B has, for example, a circular shape whose central axis is substantially the same as that of the second lower valve chamber 132.
- each of the first through holes 155A and 155B is, for example, 6.6 mm. That is, the outer periphery of the second sealing material 152 is smaller than the outer periphery of each of the first valve housing 191 and the second valve housing 192.
- the second sealing material 152 is made of, for example, a double-sided tape or an adhesive.
- the diameter of the first through hole 155A is larger than the diameter of the valve seat 138 and smaller than the diameter of the first lower valve chamber 131. That is, the outer periphery of the first through hole 155A is larger than the outer periphery of the valve seat 138 and smaller than the outer periphery of the first lower valve chamber 131.
- the diameter of the first through hole 155B is smaller than the diameter of the second lower valve chamber 132. That is, the outer periphery of the first through hole 155B is smaller than the outer periphery of the second lower valve chamber 132.
- valve 101 As described above, in the valve 101, a part of the first sealing material 151 is located in the first upper valve chamber 133 and the second upper valve chamber 134. Similarly, a part of the second sealing material 152 is located in the first lower valve chamber 131 and the second lower valve chamber 132.
- the valve 101 has a check valve 160 and an exhaust valve 170 as shown in FIG.
- the check valve 160 includes a part of the second valve housing 192 provided with the first ventilation hole 111, a part of the first valve housing 191 provided with the second ventilation hole 112, and the hole 121 in the diaphragm 120. , And a valve seat 138 that contacts the periphery and covers the hole 121.
- the check valve 160 permits the flow of fluid from the first lower valve chamber 131 side to the first upper valve chamber 133 side, and the flow of fluid from the first upper valve chamber 133 side to the first lower valve chamber 131 side. Shut off.
- the diaphragm 120 comes into contact with or separates from the valve seat 138 due to a pressure difference between the first lower valve chamber 131 and the first upper valve chamber 133.
- the exhaust valve 170 includes a part of the second valve casing 192 including the first vent hole 110, a part of the first valve casing 191 including the second vent hole 112 and the third vent hole 113, A part of the diaphragm 120 and a valve seat 139 that protrudes from the periphery of the third vent hole 113 toward the diaphragm 120 and is covered with the diaphragm 120 are covered.
- the diaphragm 120 comes into contact with or separates from the valve seat 139 due to a pressure difference between the second lower valve chamber 132 and the second upper valve chamber 134.
- the second valve housing 192, the second sealing material 152, the diaphragm 120, the first sealing material 151, and the first valve housing 191 are stacked, and the six first protrusions 180 are fitted into the six openings 182. Match. As a result, the diaphragm 120 is sandwiched between the first valve housing 191 and the second valve housing 192 via the first seal material 151 and the second seal material 152.
- the laminated body which consists of the 2nd valve housing
- the heat caulking is performed on the tip portions of the six first projecting portions 180. Thereby, the front-end
- the valve 101 has a first seal member 151 in the first valve housing 191 and the second valve housing 192 at a portion inside the first protrusion 180 in plan view from the X-axis direction.
- the diaphragm 120 is sandwiched via the second sealing material 152.
- six second protrusions 181 are provided on the outer side of the first protrusion 180.
- the first valve housing 191 has a portion outside the first protrusion 180 in contact with the six second protrusions 181. It can suppress that the part outside the 1st protrusion part 180 in the housing
- the manufacturing cost of the valve 101 can be reduced as compared with the conventional one without degrading the performance of the valve as compared with the conventional one.
- each of the six second protrusions 181 is preferably equal to the sum of the thickness of the first sealing material 151, the thickness of the diaphragm 120, and the thickness of the second sealing material 152.
- Six second projecting portions 181 having a height equal to the sum of the thickness, the thickness of the diaphragm 120, and the thickness of the second sealing material 152 are located.
- FIG. 7 is an explanatory diagram showing the air flow of the fluid control device 100 while the piezoelectric pump 10 shown in FIG. 1 is being driven.
- the fluid control device 100 first drives the piezoelectric pump 10 when starting measurement of blood pressure.
- air first flows into the pump chamber 45 in the piezoelectric pump 10 from the opening 92 and the suction hole 52.
- air is discharged from the discharge holes 55 and 56 and flows into both the second lower valve chamber 132 and the first lower valve chamber 131 of the valve 101.
- the pressure of the second lower valve chamber 132 becomes higher than the pressure of the second upper valve chamber 134.
- the diaphragm 120 seals the third ventilation hole 113 and blocks the ventilation between the second ventilation hole 112 and the third ventilation hole 113.
- the pressure in the first lower valve chamber 131 is higher than the pressure in the first upper valve chamber 133. For this reason, the periphery of the hole 121 in the diaphragm 120 is separated from the valve seat 138, and the first ventilation hole 111 and the second ventilation hole 112 communicate with each other through the hole 121.
- the diaphragm 120 is fixed to the first valve housing 191 and the second valve housing 192 so that the periphery of the hole 121 of the diaphragm 120 is in contact with the valve seat 138.
- the valve seat 138 pressurizes the periphery of the hole 121 in the diaphragm 120.
- the air flowing out from the hole 121 through the first vent hole 111 of the valve 101 becomes a pressure slightly lower than the discharge pressure of the piezoelectric pump 10, and the first upper valve chamber 133 and the first 2 flows into the upper valve chamber 134.
- the discharge pressure of the piezoelectric pump 10 is applied to the second lower valve chamber 132.
- the pressure of the second lower valve chamber 132 is slightly higher than the pressure of the second upper valve chamber 134, and the state where the diaphragm 120 seals the third vent hole 113 and opens the hole 121 is maintained.
- valve 101 As shown in FIGS. 3 and 4, the outer shapes of the valve chambers 131, 132, 133, and 134 are circular, so that the diaphragm 120 (particularly around the hole 121) is formed. The tension is applied evenly.
- each valve can be opened and closed more reliably.
- FIG. 8 is an explanatory diagram showing the air flow of the fluid control device 100 immediately after the piezoelectric pump 10 shown in FIG. 1 stops driving.
- the fluid control device 100 stops driving the piezoelectric pump 10.
- the air in the pump chamber 45, the first lower valve chamber 131, and the second lower valve chamber 132 flows from the central vent 52 and the opening 92 of the piezoelectric pump 10 to the fluid control device 100. Is quickly exhausted to the outside. Further, the pressure of the cuff 109 is applied from the second vent 112 to the first upper valve chamber 133 and the second upper valve chamber 134.
- the pressure in the first lower valve chamber 131 is lower than the pressure in the first upper valve chamber 133.
- the diaphragm 120 contacts the valve seat 138 and seals the hole 121.
- the pressure in the second lower valve chamber 132 is lower than the pressure in the second upper valve chamber 134.
- the diaphragm 120 is separated from the valve seat 139 and opens the third vent hole 113.
- the second vent hole 112 and the third vent hole 113 communicate with each other via the communication path 135 and the second upper valve chamber 134.
- the air in the cuff 109 is rapidly exhausted from the third vent 113 through the second vent 112, the communication passage 135, and the second upper valve chamber 134 (see FIG. 8).
- the air can be quickly exhausted from the cuff 109 after the cuff 109 is filled with compressed air.
- a part of the second sealing material 152 is located in the first lower valve chamber 131 and the second lower valve chamber 132, and the first upper valve chamber 133 and the second upper valve chamber 134 are located.
- a part of the first sealing material 151 is located inside.
- first sealing material 151 and the second sealing material 152 are used to bond the first valve housing 191, the second valve housing 192, and the diaphragm 120 and to capture foreign substances present in the valve chambers 131, 132, 133, and 134. And can be done.
- valve 101 for example, even if foreign matter is mixed in the valve 101, malfunction due to the foreign matter can be suppressed. Particularly in the exhaust valve 170, it is possible to prevent the third vent hole 113 of the valve seat 139 from being blocked by a foreign object.
- the fluid control device 100 including the valve 101 of this embodiment has the same effect.
- the performance of the valve 101 is indicated by pressure loss and leak pressure.
- the leakage of air from the first vent holes 110 and 111 of the valve 101 to the third vent hole 113 while the piezoelectric pump 10 is driving greatly affects the performance of the valve 101.
- the pressure loss is a loss when the check valve 160 is opened.
- the diaphragm 120 is under tension, and the valve seat 138 is provided in the second valve housing 192 so as to pressurize the periphery of the hole 121 in the diaphragm 120. That is, stress is applied to the diaphragm 120 from the first upper valve chamber 133 side to the first lower valve chamber 131 side.
- the exhaust valve 170 Due to this pressure loss, the exhaust valve 170 has a force that keeps the exhaust valve 170 closed while air is sent from the first vent 111 to the cuff 109 of the valve 101 (from the second lower valve chamber 132 side to the diaphragm). The exhaust valve 170 is in a closed state because a force that presses 120 against the valve seat 139 is applied.
- the pressure loss when the pressure loss is small, the difference between the pressure P2 of the first upper valve chamber 133 and the pressure P1 of the first lower valve chamber 131 is reduced. That is, the force that closes the exhaust valve 170 (the force that presses the diaphragm 120 against the valve seat 139 from the second lower valve chamber 132 side) decreases, and the third vents 110, 111 of the valve 101 pass through the third passage. Leakage of air into the pores 113 increases.
- the valve 101 suppresses the leakage of the air in the cuff 109 from the third ventilation hole 113 by using the pressure loss generated by the tension of the diaphragm 120.
- leak pressure pressure of the cuff 109 while the piezoelectric pump 10 is driven ⁇ pressure of the cuff 109 5 seconds after the piezoelectric pump 10 is stopped driving”.
- valve 101 (see FIG. 1) according to the embodiment of the present invention
- valve 901 (see FIG. 12) according to the first comparative example
- valve 501 (see FIG. 13) according to the second comparative example
- the valve 501 is different from the valve 901 in that the check valve 160 and the exhaust valve are viewed from the X-axis direction of the first seal material 951, the diaphragm 920, and the second seal material 952, as described above.
- the first sealing material 151, the second sealing material 152, and the diaphragm 120 are provided except for the outer portions J 1 to J 6 (see FIGS. 12 and 13) that are more peripheral than 170.
- the valve 101 is different from the valve 501 in that the second protrusion 181 is provided.
- FIG. 9 shows the positions of the valve 101 according to the embodiment of the present invention, the valve 901 according to the first comparative example, and the valve 501 according to the second comparative example in the second valve housing 192 and the second valve housing 192. It is a figure which shows the relationship with the amount of curvature.
- FIG. 9 shows a result of measuring the amount of warpage of the valve 101, the valve 901, and the valve 501 from the point A to the point C through the point B in the second valve housing 192 with a laser displacement meter.
- the points A and C are points that are located outside the first protrusion 180 in the second valve housing 192, and the point B is the second valve housing. It is a point located in the part inside the 1st protrusion part 180 in 192.
- the piezoelectric pump 10 is driven to apply a discharge pressure 40 (kPa) of the piezoelectric pump 10 to the valves 101, 501, and 901, and the pressure loss and leakage pressure of the valves 101, 501, and 901 are measured. Shown in
- valve 501 has a pressure loss of 0.1 (kPa), whereas the valves 101 and 901 have a pressure loss of 0.7 (kPa).
- the valve 501 has a leak pressure of 1.1 (kPa), whereas the valves 101 and 901 have a leak pressure of 0.1 (kPa).
- valve 501 a laminated body composed of the first valve housing 191, the first sealing material 151, the diaphragm 120, the second sealing material 152, and the second valve housing 192 is formed on the base S.
- the portion outside the first projecting portion 180 in the first valve housing 191 is the second valve housing 192. This is thought to be due to warping to the side.
- the tension of the diaphragm 120 is not sufficiently obtained, that is, the pressure loss equivalent to that of the valve 901 does not occur, and the leak pressure is higher than those of the valves 101 and 901.
- the first valve housing 191 has the first. This is considered to be because a portion outside the projecting portion 180 was in contact with the six second projecting portions 181 and curled. Thereby, in the valve 101, it is considered that sufficient tension of the diaphragm 120 was obtained, that is, a pressure loss equivalent to that of the valve 901 was generated, and air leakage from the inside of the valve 101 could be suppressed.
- the manufacturing cost of the valve 101 can be reduced more than before without degrading the performance of the valve as compared with the conventional one.
- the pump in the above-described embodiment includes the unimorph type actuator 40 that bends and vibrates, but may include a bimorph type actuator that bends and vibrates by attaching piezoelectric elements to both sides of the diaphragm.
- the pump in the above-described embodiment includes the actuator 40 that bends and vibrates due to expansion and contraction of the piezoelectric element 42, but is not limited thereto.
- an actuator that bends and vibrates by electromagnetic drive may be provided.
- the piezoelectric element is made of a lead zirconate titanate ceramic, but is not limited thereto.
- it may be made of a non-lead piezoelectric ceramic material such as potassium sodium niobate and alkali niobate ceramics.
- the second projecting portion 181 is provided in the second valve housing 192, but is not limited thereto.
- the second protrusion 181 may be provided on the first valve housing 191.
- the outer periphery of the first through hole 155A is smaller than the outer periphery of the first lower valve chamber 131, and the outer periphery of the first through hole 155B is smaller than the outer periphery of the second lower valve chamber 132.
- the outer periphery of the first through hole 155A may be equal to the outer periphery of the first lower valve chamber 131, and the second seal member may have the outer periphery of the first through hole 155B equal to the outer periphery of the second lower valve chamber 132.
- the outer periphery of the second through hole 156A is smaller than the outer periphery of the first upper valve chamber 133, and the outer periphery of the second through hole 156B is smaller than the outer periphery of the second upper valve chamber 134.
- the outer periphery of the second through-hole 156A may have the first sealing material equal to the outer periphery of the first upper valve chamber 133, and the outer periphery of the second through-hole 156B may be equal to the outer periphery of the second upper valve chamber 134.
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Abstract
Description
前記ダイヤフラムの一方主面に設けられている第1シール材と、
前記第1シール材を介して前記ダイヤフラムと接合する第1弁筺体であって、第1の孔と、前記ダイヤフラムの一方主面側に位置し、前記第1の孔に連通する第1バルブ室と、前記第1バルブ室よりも外側に位置する複数の開口部と、を有する第1弁筺体と、
前記ダイヤフラムの他方主面に設けられている第2シール材と
前記第2シール材を介して前記ダイヤフラムと接合する第2弁筺体であって、第2の孔と、前記ダイヤフラムの他方主面側に位置し、前記第2の孔に連通する第2バルブ室と、前記第2バルブ室よりも外側に位置する複数の第1突出部と、を有する第2弁筐体と、を備え、
前記ダイヤフラムは、前記複数の第1突出部が前記複数の開口部に嵌め合わさることによって、前記第1シール材及び前記第2シール材を介して前記第1弁筺体および前記第2弁筐体に挟持され、
前記ダイヤフラムにおける前記孔部の周囲が、前記第2バルブ室において前記第2弁筐体に当接して、前記孔部が被覆され、
前記第1シール材と前記ダイヤフラムと前記第2シール材とのそれぞれの外周は、前記第1弁筺体および前記第2弁筺体の外周より小さく、前記複数の第1突出部より内側に設けられ、
前記第1弁筺体および前記第2弁筺体の少なくとも一方は、前記複数の第1突出部より外側に位置する複数の第2突出部を有する。
上記(1)~(3)のいずれかに記載のバルブと、を備え、
前記第1弁筺体の前記第1の孔は、流体を貯蔵する流体貯蔵部に接続され、
前記第2弁筺体の前記第2の孔は、前記ポンプの前記吐出孔に接続される。
なお、前述の実施形態では流体として空気を用いているが、これに限るものではなく、当該流体が、空気以外の気体であっても適用できる。
10…圧電ポンプ
40…圧電アクチュエータ
41…振動板
42…圧電素子
43…補強板
45…ポンプ室
51…可撓板
52…吸引孔
53A、53B、53C…スペーサ
54…蓋板
55、56…吐出孔
57…固定部
58…可動部
60…振動板ユニット
61…枠板
62…連結部
63,72…外部端子
70…電極導通用板
71…枠部位
73…内部端子
80…ポンプ筺体
91…基板
92…開口部
100…流体制御装置
101…バルブ
106A…カフ接続口
109…カフ
109A…腕帯ゴム管
110、111…第1通気孔
112…第2通気孔
113…第3通気孔
120…ダイヤフラム
121…孔部
131…第1下バルブ室
132…第2下バルブ室
133…第1上バルブ室
134…第2上バルブ室
135…連通路
138、139…弁座
140…アクチュエータ
151…第1シール材
152…第2シール材
155A、155B…第1貫通孔
156A、156B…第2貫通孔
160…逆止弁
170…排気弁
180…第1突出部
181…第2突出部
182…開口部
191…第1弁筺体
192…第2弁筐体
501…バルブ
900…流体制御装置
901…バルブ
920…ダイヤフラム
951…第1シール材
952…第2シール材
Claims (4)
- 孔部が設けられているダイヤフラムと、
前記ダイヤフラムの一方主面に設けられている第1シール材と、
前記第1シール材を介して前記ダイヤフラムと接合する第1弁筺体であって、第1の孔と、前記ダイヤフラムの一方主面側に位置し、前記第1の孔に連通する第1バルブ室と、前記第1バルブ室よりも外側に位置する複数の開口部と、を有する第1弁筺体と、
前記ダイヤフラムの他方主面に設けられている第2シール材と
前記第2シール材を介して前記ダイヤフラムと接合する第2弁筺体であって、第2の孔と、前記ダイヤフラムの他方主面側に位置し、前記第2の孔に連通する第2バルブ室と、前記第2バルブ室よりも外側に位置する複数の第1突出部と、を有する第2弁筐体と、を備え、
前記ダイヤフラムは、前記複数の第1突出部が前記複数の開口部に嵌め合わさることによって、前記第1シール材及び前記第2シール材を介して前記第1弁筺体および前記第2弁筐体に挟持され、
前記ダイヤフラムにおける前記孔部の周囲が、前記第2バルブ室において前記第2弁筐体に当接して、前記孔部が被覆され、
前記第1シール材と前記ダイヤフラムと前記第2シール材とのそれぞれの外周は、前記第1弁筺体および前記第2弁筺体の外周より小さく、前記複数の第1突出部より内側に設けられ、
前記第1弁筺体および前記第2弁筺体の少なくとも一方は、前記複数の第1突出部より外側に位置する複数の第2突出部を有する、バルブ。 - 前記複数の第2突出部の高さは、前記複数の第1突出部の高さより低い、請求項1に記載のバルブ。
- 前記複数の第2突出部の高さは、前記第1シール材の厚みと前記ダイヤフラムの厚みと前記第2シール材の厚みとの和に等しい、請求項1又は2に記載のバルブ。
- 吐出孔が設けられているポンプと、
請求項1から3のいずれか1項に記載のバルブと、を備え、
前記第1弁筺体の前記第1の孔は、流体を貯蔵する流体貯蔵部に接続され、
前記第2弁筺体の前記第2の孔は、前記ポンプの前記吐出孔に接続される、流体制御装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201490000752.1U CN205260908U (zh) | 2013-05-24 | 2014-05-14 | 阀、流体控制装置 |
JP2015518197A JP6011722B2 (ja) | 2013-05-24 | 2014-05-14 | バルブ、流体制御装置 |
DE112014002557.7T DE112014002557T5 (de) | 2013-05-24 | 2014-05-14 | Vorrichtung zur Ventil- und Flüssigkeitsregelung |
US14/948,528 US9879669B2 (en) | 2013-05-24 | 2015-11-23 | Valve and fluid control apparatus |
US15/844,718 US10883494B2 (en) | 2013-05-24 | 2017-12-18 | Valve and fluid control apparatus |
US17/136,587 US11486388B2 (en) | 2013-05-24 | 2020-12-29 | Valve and fluid control apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013109994 | 2013-05-24 | ||
JP2013-109994 | 2013-05-24 |
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US14/948,528 Continuation US9879669B2 (en) | 2013-05-24 | 2015-11-23 | Valve and fluid control apparatus |
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WO2014188915A1 true WO2014188915A1 (ja) | 2014-11-27 |
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US (3) | US9879669B2 (ja) |
JP (3) | JP6011722B2 (ja) |
CN (1) | CN205260908U (ja) |
DE (1) | DE112014002557T5 (ja) |
WO (1) | WO2014188915A1 (ja) |
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JP6260739B2 (ja) | 2015-05-28 | 2018-01-17 | 株式会社村田製作所 | 流体制御装置 |
US20180209412A1 (en) * | 2016-01-29 | 2018-07-26 | Shenzhen Xingrisheng Industrial Co., Ltd. | Piezoelectric ceramic air pump and construction method thereof |
CN109069037B (zh) * | 2016-05-09 | 2021-11-16 | 株式会社村田制作所 | 阀、流体控制装置以及血压计 |
WO2018020882A1 (ja) * | 2016-07-29 | 2018-02-01 | 株式会社村田製作所 | バルブ、気体制御装置、及び血圧計 |
DE102017010071A1 (de) | 2016-11-02 | 2018-05-03 | Mann+Hummel Gmbh | Einheit zum Regeln oder Steuern eines Fluiddrucks |
DE102017010018A1 (de) | 2016-11-02 | 2018-05-03 | Mann + Hummel Gmbh | Einheit zum Regeln oder Steuern eines Fluiddrucks |
DE102017010019A1 (de) | 2016-11-02 | 2018-05-03 | Mann + Hummel Gmbh | Einheit zum Regeln oder Steuern eines Fluiddrucks |
DE102017010020A1 (de) * | 2016-11-02 | 2018-05-03 | Mann + Hummel Gmbh | Einheit zum Regeln oder Steuern eines Fluiddrucks |
GB201622024D0 (en) * | 2016-11-14 | 2017-02-08 | Inventage Lab Inc | Apparatus and method for large scale production of monodisperse, microsheric and biodegradable polymer-based drug delivery |
GB2579954B (en) * | 2017-10-10 | 2022-08-10 | Murata Manufacturing Co | Pump and fluid control apparatus |
TWI676463B (zh) * | 2017-11-07 | 2019-11-11 | 研能科技股份有限公司 | 穿戴式血壓測量裝置 |
TWI676462B (zh) * | 2017-11-07 | 2019-11-11 | 研能科技股份有限公司 | 穿戴式血壓測量裝置 |
CN110546415B (zh) * | 2017-12-22 | 2021-09-24 | 株式会社村田制作所 | 阀、应用设备 |
WO2019159501A1 (ja) * | 2018-02-16 | 2019-08-22 | 株式会社村田製作所 | 流体制御装置 |
CN111542715B (zh) | 2018-03-09 | 2022-10-18 | 株式会社村田制作所 | 阀以及具备阀的流体控制装置 |
TWI677319B (zh) * | 2018-07-31 | 2019-11-21 | 豪展醫療科技股份有限公司 | 血壓量測裝置與血壓量測方法 |
DE102018006846A1 (de) * | 2018-08-29 | 2020-03-05 | Pulsion Medical Systems Se | Mehrteilige Vorrichtung zum nicht-invasiven Erfassen von Vitalparametern |
DE102018124467A1 (de) * | 2018-10-04 | 2020-04-09 | Mst Innovation Gmbh | Hydraulisches Mikroventil |
TWI695120B (zh) * | 2019-01-15 | 2020-06-01 | 研能科技股份有限公司 | 微流體致動器 |
DE102021112525A1 (de) * | 2021-05-12 | 2022-11-17 | Bürkert Werke GmbH & Co. KG | Membranventil und Verfahren zu seiner Herstellung |
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- 2014-05-14 DE DE112014002557.7T patent/DE112014002557T5/de active Pending
- 2014-05-14 WO PCT/JP2014/062771 patent/WO2014188915A1/ja active Application Filing
- 2014-05-14 CN CN201490000752.1U patent/CN205260908U/zh not_active Expired - Lifetime
- 2014-05-14 JP JP2015518197A patent/JP6011722B2/ja active Active
-
2015
- 2015-11-23 US US14/948,528 patent/US9879669B2/en active Active
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2016
- 2016-09-21 JP JP2016183814A patent/JP6260662B2/ja active Active
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2017
- 2017-12-11 JP JP2017236597A patent/JP6460219B2/ja active Active
- 2017-12-18 US US15/844,718 patent/US10883494B2/en active Active
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2020
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Publication number | Publication date |
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US10883494B2 (en) | 2021-01-05 |
US9879669B2 (en) | 2018-01-30 |
US20180128267A1 (en) | 2018-05-10 |
CN205260908U (zh) | 2016-05-25 |
DE112014002557T5 (de) | 2016-03-03 |
JPWO2014188915A1 (ja) | 2017-02-23 |
JP2018069089A (ja) | 2018-05-10 |
US20210115916A1 (en) | 2021-04-22 |
JP2017026155A (ja) | 2017-02-02 |
JP6011722B2 (ja) | 2016-10-19 |
US11486388B2 (en) | 2022-11-01 |
US20160076537A1 (en) | 2016-03-17 |
JP6460219B2 (ja) | 2019-01-30 |
JP6260662B2 (ja) | 2018-01-17 |
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