WO2022230678A1 - ポンプ装置 - Google Patents
ポンプ装置 Download PDFInfo
- Publication number
- WO2022230678A1 WO2022230678A1 PCT/JP2022/017809 JP2022017809W WO2022230678A1 WO 2022230678 A1 WO2022230678 A1 WO 2022230678A1 JP 2022017809 W JP2022017809 W JP 2022017809W WO 2022230678 A1 WO2022230678 A1 WO 2022230678A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter member
- gas
- wall
- pump
- hole
- Prior art date
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 238000005086 pumping Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- F04B53/20—Filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/04—Permanent measures for connecting different parts of the filter, e.g. welding, glueing or moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/06—Details of supporting structures for filtering material, e.g. cores
Definitions
- the present invention relates to a pump device that includes a pump body that conveys gas and a filter that filters gas.
- Patent Literature 1 describes a cooling device having a pump body containing a piezoelectric pump.
- the pump body is formed with a passage for introducing gas.
- the passage communicates with an introduction hole for introducing gas from the outside.
- a part of the passage communicates with a discharge port that discharges the gas to the outside.
- a piezoelectric pump introduces gas from the outside through an introduction hole and a passage, and discharges the gas from a discharge port.
- the filter is provided so as to block the introduction hole.
- the filter regulates passage of liquid when gas is introduced from the introduction hole.
- pressure loss occurs due to the filter in bidirectional gas transportation.
- the function as a filter (filtration function) is not essential, and unnecessary pressure loss occurs.
- an object of the present invention is to reduce pressure loss when the filtering function of the filter is not required.
- the pump device includes a pump body, a filter member, and a holding member.
- the pump body has a first wall with a suction hole and a second wall with a discharge hole.
- the filter member has a shape and a position that overlaps the suction hole on the outside of the first wall side of the pump body when viewed in a direction perpendicular to the first wall.
- the holding member holds the filter member to the pump body such that the distance between at least the portion of the filter member overlapping the suction hole and the first wall can be changed.
- the holding member preferably separates the space generated between the portion of the filter member that overlaps the suction hole and the first wall from the outer edge of the filter member or the holding member. is also a shape that communicates with the outside.
- pressure loss can be reduced when the filtering function of the filter is not required.
- FIG. 1 is an exploded perspective view of the pump device according to the first embodiment.
- FIG. 2 is a schematic side sectional view showing the configuration of the pump device according to the first embodiment.
- FIG. 3 is a diagram schematically showing the state of the filter member and the like when gas is inhaled.
- FIG. 4A is a side view schematically showing the state of the filter member and the like when gas is discharged, and
- FIG. 4B is a plan view of the filter member side.
- FIG. 5 is an exploded perspective view of the pump device according to the second embodiment.
- FIG. 6 is a plan view of the surface of the filter member when the gas is discharged.
- FIG. 7 is an exploded perspective view of the pump device according to the second embodiment.
- FIG. 8 is a diagram schematically showing the state of the filter member and the like when gas is sucked.
- FIG. 9A is a side view schematically showing the state of the filter member and the like when gas is discharged
- FIG. 9B is a plan view of the filter member side.
- FIG. 10(A) is a schematic side cross-sectional view showing the configuration of a pump device according to a fourth embodiment
- FIG. 10(B) is a plan view of the surface on the filter member side.
- FIG. 11 is a diagram schematically showing the state of the filter member and the like when gas is inhaled.
- FIG. 12(A) is a side view schematically showing the state of the filter member and the like when gas is discharged
- FIG. 12(B) is a plan view of the filter member side.
- FIG. 1 is an exploded perspective view of the pump device according to the first embodiment.
- FIG. 2 is a schematic side sectional view showing the configuration of the pump device according to the first embodiment.
- the shape of each constituent element is partially or entirely exaggerated in order to facilitate understanding of the configuration of the actuator and the fluid control device.
- the pump device 10 includes a pump body 11, a filter member 70, and a plurality of adhesive members 700.
- the pump body 11 includes a flat plate member 20, a piezoelectric element 30, a flat plate member 40, a side wall member 50, and a lid member 60.
- the flat plate member 20 is made of a metal plate or the like, and includes a main flat plate 21, a frame body 22, and a plurality of connecting members 23.
- the main flat plate 21, the frame 22, and the plurality of connecting members 23 are integrally formed using, for example, one flat plate.
- the main flat plate 21 is circular in plan view.
- the frame 22 is arranged so as to surround the main flat plate 21 .
- the plurality of connecting members 23 are beam-shaped and arranged between the main flat plate 21 and the frame 22 .
- a plurality of connecting members 23 support the main flat plate 21 with respect to the frame 22 so as to be able to vibrate.
- the piezoelectric element 30 has a circular shape in plan view.
- the piezoelectric element 30 includes a piezoelectric body and a driving conductor.
- the piezoelectric element 30 is arranged on one main surface of the main flat plate 21 . At this time, the center of the piezoelectric element 30 and the center of the main flat plate 21 coincide. Note that matching here includes the range in which the center positions are shifted from each other within the range of manufacturing error.
- the piezoelectric element 30 is distorted by applying a drive voltage.
- the main flat plate 21 vibrates due to the stress caused by the strain of the piezoelectric element 30 .
- the flat plate member 40 is made of a metal plate or the like.
- the flat plate member 40 is arranged on the other main surface side of the flat plate member 20 .
- the flat plate member 40 and the flat plate member 20 are arranged so that their main surfaces face each other.
- the flat plate member 40 is arranged apart from the other main surface of the flat plate member 20 .
- a through hole 400 is formed in the flat plate member 40 so as to pass through the flat plate member 40 in the thickness direction.
- the side wall member 50 has an annular shape with a hollow 500 and is arranged between the flat plate member 20 and the flat plate member 40 .
- Side wall member 50 connects frame 22 of flat plate member 20 and flat plate member 40 .
- the lid member 60 has a first portion 61 and a second portion 62 .
- the lid member 60 is made of metal, for example.
- the first portion 61 is a flat plate.
- the second portion 62 is a frame standing along the outer edge of the first portion 61 in a direction perpendicular to the main surface of the first portion 61 .
- a plurality of through holes 600 are formed in the first portion 61 .
- the lid member 60 is arranged so that the first portion 61 faces the flat plate member 20 and the side on which the second portion 62 stands is on the flat plate member 20 side.
- the tip of the second portion 62 (the end opposite to the side connected to the first portion 61 ) is connected to the frame 22 of the flat plate member 20 .
- the pump main body 11 functions as a pump that conveys gas. Therefore, the plurality of through holes 600 correspond to the "suction holes” of the invention, and the through holes 400 correspond to the "discharge holes” of the invention.
- the first portion 61 of the lid member 60 corresponds to the "first wall” of the invention, and the flat plate member 40 corresponds to the "second wall” of the invention.
- the filter member 70 is a flexible plate. That is, the shape of the filter member 70 changes depending on the passage of gas or the like.
- the filter member 70 allows the gas to be conveyed by the pump device 10 to pass through and blocks other unwanted matter (for example, dust having a particle size larger than that of the gas).
- the filter member 70 is a flat plate provided with a large number of holes having diameters smaller than the opening diameters of the plurality of through holes 600 .
- the filter member 70 may be a waterproof filter, a HEPA filter, or the like.
- the shape of the filter member 70 in plan view (the shape in a state where no pressure is applied from the outside such as gas passage) is the shape of the pump body 11 in plan view (the flat plate surface of the first portion 61 of the lid member 60 is shown in plan view). shape).
- the filter member 70 is arranged so as to face the outer main surface 102 of the first portion 61 of the lid member 60 .
- the plurality of adhesive members 700 are arranged at positions different from (not overlapping with) the plurality of through holes 600 in a plan view of the first portion 61 .
- One end in the height direction of the plurality of adhesive members 700 is adhered to the outer main surface 102 of the first portion 61 , and the other end is adhered to the filter member 70 . That is, the plurality of adhesive members 700 adhere and fix a plurality of locations of the filter member 70 that do not overlap the plurality of through holes 600 in plan view to the first portion 61 .
- the heights and arrangement positions of the plurality of adhesive members 700 are such that when the filter member 70 is deformed by the gas sucked into the pump body 11 through the plurality of through holes 600, the filter member 70 becomes a plurality of adhesive members. It is set to block the through hole 600 . At this time, the flow rate at the time of gas suction and the degree of flexibility (elastic modulus, etc.) of the filter member 70 are taken into consideration.
- Each of the plurality of adhesive members 700 corresponds to the "individual holding member" of the present invention.
- FIG. 3 is a diagram schematically showing the state of the filter member and the like when gas is inhaled.
- illustration of the specific structure inside the pump body 11 is omitted (see FIG. 2).
- thick arrows indicate gas flows.
- a cuff 91 is attached to the outer main surface 101 of the pump body 11 as an example of how the pump device 10 is used.
- gas is sucked into the pump body 11 through the through-hole 600 and discharged to the cuff 91 through the through-hole 400 .
- the gas flows into the through holes 600 from the filter member 70 side. At this time, the gas passes through the filter member 70 and flows into the through hole 600 .
- the filter member 70 receives stress toward the pump main body 11 side when the gas passes through. Since the filter member 70 has flexibility, the filter member 70 bends due to this stress. Filter member 70 contacts pump body 11 (first portion 61 of lid member 60 ) in a predetermined region including through hole 600 .
- the through hole 600 is blocked by the filter member 70 . Therefore, only the gas filtered by the filter member 70 is sucked into the pump main body 11 . As a result, only the filtered gas is discharged to the cuff 91 as well.
- Gas is discharged by, for example, stopping the driving of the pump main body 11 .
- the inside of the cuff 91 has a higher pressure than the pump main body 11 and the outside, so gas is discharged from the cuff 91 to the pump main body 11 . If the direction of gas transport in the pump body 11 can be reversed, the pump body 11 may be driven so that the gas is transported from the through hole 400 to the through hole 600 .
- FIG. 4(A) is a side view schematically showing the state of the filter member and the like when gas is discharged
- FIG. 4(B) is a plan view of the filter member side.
- illustration of the specific structure inside the pump main body 11 is omitted (see FIG. 2).
- thick arrows indicate gas flows.
- the gas is discharged from the cuff 91 into the pump main body 11 through the through holes 400, and further, the gas is discharged from the pump main body 11 to the outside through the through holes 600.
- the gas is discharged through the through hole 600 toward the filter member 70 outside the pump body 11 .
- the filter member 70 is separated from the outer main surface 102 of the first portion 61 of the pump body 11 as shown in FIG. 4(B) due to the stress received from the discharged gas.
- the filter member 70 has gas permeability, as shown in FIG. 4A, part of the gas discharged through the through holes 600 passes through the filter member 70 and is discharged to the outside. be.
- the filter member 70 is partially adhered to the first portion 61 by a plurality of adhesive members 700. Therefore, when the filter member 70 is separated from the through-hole 600 , the space where the filter member 70 and the through-hole 600 overlap in plan view corresponds to the space between the filter member 70 and the first portion 61 at the outer edge of the filter member 70 . Communicate with the opening between.
- part of the gas discharged through the through hole 600 is formed between the filter member 70 and the outer main surface 102 of the first portion 61 as shown in FIGS. 4(A) and 4(B). It is discharged to the outside from the opening of the outer edge of the filter member 70 through the space.
- the gas when the gas is discharged, the gas is discharged from the opening of the outer edge of the filter member 70 through the channel through which the gas passes through the filter member 70 and the gap between the filter member 70 and the first portion 61. A flow path is ensured. This reduces the pressure loss when the gas is discharged.
- the filtering function of the filter member 70 can be more reliably realized when gas is sucked in, and the pressure loss can be reduced and rapid gas discharge can be realized when gas is discharged.
- the gas discharged through the through holes 600 flows along the surface of the first portion 61 of the lid member 60 when the gas is discharged.
- the gas easily absorbs the heat of the pump body 11, and the heat dissipation of the pump device 10 is improved.
- the filter member 70 is made of a material having a high thermal conductivity such as metal, the filter member 70 can also dissipate heat. Thereby, the heat dissipation of the pump device 10 is further improved.
- FIG. 5 is an exploded perspective view of the pump device according to the second embodiment.
- the pump device 10A according to the second embodiment differs from the pump device 10 according to the first embodiment in that it includes a pump main body 11A and the arrangement of a plurality of adhesive members 700.
- the rest of the configuration of the pump device 10A is the same as that of the pump device 10, and the description of the similar portions will be omitted.
- the pump device 10A includes a pump main body 11A.
- the pump main body 11A includes a lid member 60A.
- a through hole 600 is formed substantially in the center of the first portion 61 of the lid member 60A.
- the filter member 70 is adhered to the first portion 61 of the lid member 60A by a plurality of adhesive members 700 near each corner along the outer edge.
- the plurality of bonding members 700 are arranged so as to surround the through hole 600 and not overlap each other in plan view.
- the operation is substantially the same as in the first embodiment, but since the through holes 600 are surrounded, the difference in deformation depending on the circumferential position of the portion of the filter member 70A that overlaps the through holes 600 can be reduced. . As a result, the through hole 600 can be more reliably blocked by the filter member 70 when the gas is sucked.
- FIG. 6 is a plan view of the surface of the filter member when the gas is discharged. At the time of discharging, the operation is substantially the same as in the first embodiment. The difference in deformation can be small.
- the gas discharged from the through-holes 600 and flowing between the filter member 70 and the first portion 61 of the lid member 60A is distributed substantially in all directions of the filter member 70A except for the direction in which the plurality of adhesive members 700 are present. It flows uniformly and is discharged to the outside through the openings on the outer edge. Therefore, for example, substantially the entire surface of the first portion 61 of the lid member 60A can be substantially uniformly dissipated.
- FIG. 7 is an exploded perspective view of the pump device according to the second embodiment.
- the pump device 10B according to the third embodiment differs from the pump device 10A according to the second embodiment in a filter member 70B and an adhesive member 700B.
- the rest of the configuration of the pump device 10B is the same as that of the pump device 10A, and the description of the same portions will be omitted.
- the pump main body 11B and the lid member 60B of the pump device 10B are the same as the pump main body 11A and the lid member 60A of the pump device 10A.
- the planar view of the filter member 70B is smaller than the planar view of the first portion 61 of the lid member 60B.
- the filter member 70B is arranged so as to overlap the through hole 600 in plan view. More specifically, the filter member 70B is arranged so that the center of the filter member 70B in a plan view overlaps the through hole 600 .
- the plurality of adhesive members 700B are strip-shaped. A plurality of adhesive members 700B are arranged along two opposing sides of the filter member 70B. At this time, the plurality of adhesive members 700B are separated from each other.
- the plurality of bonding members 700B are bonded to the first portion 61 of the lid member 60B so as not to overlap the through-holes 600 and to arrange the through-holes 600 therebetween in plan view.
- FIG. 8 is a diagram schematically showing the state of the filter member and the like when gas is sucked.
- illustration of the specific structure inside the pump main body 11B is omitted (see FIG. 7).
- thick arrows indicate gas flows.
- the operation is substantially the same as in the first embodiment.
- the pump device 10B in one direction along the outer main surface 102 of the pump main body 11B (the outer main surface 102 of the first portion 61 of the lid member 60B), a plurality of adhesive members 700B are formed so as to sandwich the through hole 600. are placed.
- the pump device 10B can suppress suction of dust at the initial stage of the suction operation (during the transition of filtration).
- FIG. 9A is a side view schematically showing the state of the filter member and the like when gas is discharged
- FIG. 9B is a plan view of the filter member side.
- illustration of the specific structure inside the pump main body 11B is omitted (see FIG. 7).
- thick arrows indicate gas flows.
- the operation when discharging, the operation is substantially the same as in the first embodiment.
- the distance from the through hole 600 to the opening at the outer edge of the filter member 70B is shortened.
- the pump device 10B can further reduce pressure loss during gas discharge.
- FIG. 10(A) is a schematic side cross-sectional view showing the configuration of a pump device according to a fourth embodiment
- FIG. 10(B) is a plan view of the surface on the filter member side.
- the pump device 10C according to the fourth embodiment has a configuration of the pump main body 11C, which is made of a rigid body different from the adhesive member, and which physically holds the pump main body 11C. It differs from the pump device 10 according to the first embodiment in that it includes a holding member 710 that The rest of the configuration of the pump device 10C is the same as that of the pump device 10, and the description of the similar portions will be omitted.
- the pump device 10C includes a pump main body 11C, a filter member 70C, and a holding member 710.
- the pump main body 11 ⁇ /b>C has a lid member 60 ⁇ /b>C and a nozzle 63 .
- the nozzle 63 is formed by protruding part of the outer main surface 102 of the first portion 61 . 600 C of through-holes penetrate the nozzle 63 and the 1st part 61. As shown in FIG.
- the holding member 710 has a frame 711 and a flat plate 712 .
- the frame body 711 is fixed to the side surface of the pump main body 11C.
- the frame 711 does not overlap the through hole 400 of the flat plate member 40 in plan view.
- the frame 711 does not overlap the first portion 61 of the lid member 60C and the nozzle 63 in plan view.
- the flat plate 712 has an opening 7120 .
- the outer shape of the opening 7120 is larger than the outer shape of the nozzle 63 and smaller than the outer shape of the filter member 70C.
- the flat plate 712 is arranged outside the first portion 61 side of the lid member 60C in the pump main body 11C.
- the flat plate 712 connects to the frame 711 at the outer edge.
- the flat plate 712 has an opening 713 that is partially not connected to the frame 711 instead of connecting the entire circumference of the outer edge with the frame 711 .
- the outer shape of the filter member 70C is smaller than the outer shape of the first portion 61 in plan view.
- Filter member 70C is arranged between flat plate 712 and first portion 61 . At this time, the filter member 70C is arranged at a position where it does not come into contact with the nozzle 63 in a state in which gas is neither sucked nor discharged.
- FIG. 11 is a diagram schematically showing the state of the filter member and the like when gas is inhaled.
- illustration of the specific structure inside the pump main body 11C is omitted (see FIG. 10(A)).
- thick arrows indicate gas flows.
- gas is sucked into the through hole 600C through the opening 7120 and the filter member 70C during suction.
- the filter member 70 ⁇ /b>C receives stress from the gas and moves from the position contacting the flat plate 712 to the position contacting the nozzle 63 .
- the filter member 70C is maintained in contact with the nozzle 63 by the gas flow.
- the through hole 600C is covered with the filter member 70C when the gas is sucked.
- FIG. 12(A) is a side view schematically showing the state of the filter member and the like when gas is discharged
- FIG. 12(B) is a plan view of the filter member side.
- illustration of the specific structure inside the pump main body 11C is omitted (see FIG. 10(A)).
- thick arrows indicate gas flows.
- gas is discharged toward the filter member 70C outside the pump main body 11C through the through hole 600C during discharge.
- the filter member 70C is separated from the nozzle 63 by the stress received from the discharged gas, and is held in contact with the flat plate 712 .
- the filter member 70C has gas permeability, as shown in FIG. 12A, part of the gas discharged through the through-hole 600C passes through the filter member 70C and through the opening 7120, It is discharged outside.
- the holding member 710 made up of the frame 711 and the flat plate 712 has an opening 713 that opens sideways or the like.
- part of the gas discharged through the through hole 600 passes through the space formed between the filter member 70C, the nozzle 63, and the outer main surface 102 of the first portion 61, as shown in FIG. 12(B). It passes through and is discharged to the outside from the opening 713 .
- the pump device 10C can more reliably realize the filtering function of the filter member 70C when sucking gas, and can reduce pressure loss and realize rapid discharge when discharging gas.
- the filter member 70C it is not necessary to adhere the filter member 70C to the pump main body 11C. As a result, the heat generated in the pump main body 11C is less likely to be transmitted to the filter member 70C, and the thermal deformation of the filter member 70C and displacement of the positions of the holes of the filter member 70C due to this thermal deformation are less likely to occur.
- the shape of the piezoelectric element in plan view is not limited to circular, and may be polygonal or the like.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
本発明の第1の実施形態に係るポンプ装置について、図を参照して説明する。図1は、第1の実施形態に係るポンプ装置の分解斜視図である。図2は、第1の実施形態に係るポンプ装置の構成を示す概略的な側面断面図である。本実施形態を含む各実施形態において、各図では、アクチュエータおよび流体制御装置の構成を分かり易くするため、それぞれの構成要素の形状を部分的または全体として誇張して記載している。
図3は、気体の吸入時のフィルタ部材等の状態を概略的に示す図である。なお、図3では、ポンプ本体11の内部の具体的な構造の図示は省略している(図2参照)。図3において、太線の矢印が、気体の流れを示す。
気体の排出は、例えば、ポンプ本体11の駆動を停止することによって実現される。この場合、カフ91の内部がポンプ本体11および外部よりも高圧になるため、カフ91からポンプ本体11に気体が排出される。なお、ポンプ本体11における気体の搬送方向を逆転できる場合は、貫通孔400から貫通孔600に気体が搬送されるように、ポンプ本体11を駆動してもよい。
本発明の第2の実施形態に係るポンプ装置について、図を参照して説明する。図5は、第2の実施形態に係るポンプ装置の分解斜視図である。
吸入時は、第1の実施形態と略同じ動作となるが、貫通孔600が囲まれていることによって、フィルタ部材70Aの貫通孔600に重なる部分の周方向の位置による変形の差は小さくできる。これにより、気体の吸入時に、フィルタ部材70によって貫通孔600をより確実に塞ぐことができる。
図6は、気体の排出時のフィルタ部材側の面を視た平面図である。排出時も、第1の実施形態と略同じ動作となるが、吸入時と同様に、貫通孔600が囲まれていることによって、フィルタ部材70Aの貫通孔600に重なる部分の周方向の位置による変形の差は小さくできる。
本発明の第3の実施形態に係るポンプ装置について、図を参照して説明する。図7は、第2の実施形態に係るポンプ装置の分解斜視図である。
図8は、気体の吸入時のフィルタ部材等の状態を概略的に示す図である。なお、図8では、ポンプ本体11Bの内部の具体的な構造の図示は省略している(図7参照)。図8において、太線の矢印が、気体の流れを示す。
図9(A)は、気体の排出時のフィルタ部材等の状態を概略的に示す側面図であり、図9(B)は、フィルタ部材側の面を視た平面図である。なお、図9(A)では、ポンプ本体11Bの内部の具体的な構造の図示は省略している(図7参照)。図9(A)、図9(B)において、太線の矢印が、気体の流れを示す。
本発明の第4の実施形態に係るポンプ装置について、図を参照して説明する。図10(A)は、第4の実施形態に係るポンプ装置の構成を示す概略的な側面断面図であり、図10(B)は、フィルタ部材側の面を視た平面図である。
図11は、気体の吸入時のフィルタ部材等の状態を概略的に示す図である。なお、図11では、ポンプ本体11Cの内部の具体的な構造の図示は省略している(図10(A)参照)。図11において、太線の矢印が、気体の流れを示す。
図12(A)は、気体の排出時のフィルタ部材等の状態を概略的に示す側面図であり、図12(B)は、フィルタ部材側の面を視た平面図である。なお、図12(A)では、ポンプ本体11Cの内部の具体的な構造の図示は省略している(図10(A)参照)。図12(A)、図12(B)において、太線の矢印が、気体の流れを示す。
11、11A、11B、11C:ポンプ本体
20:平板部材
21:主平板
22:枠体
23:連結部材
30:圧電素子
40:平板部材
50:側壁部材
60、60A、60B、60C:蓋部材
61:第1部分
62:第2部分
63:ノズル
70、70A、70B、70C:フィルタ部材
91:カフ
101、102:外主面
400:貫通孔
500:中空
600、600C:貫通孔
700、700B:接着部材
710:保持部材
711:枠体
712:平板
713、7120:開口部
Claims (6)
- 吸入孔を有する第1壁および吐出孔を有する第2壁を有するポンプ本体を備えるポンプ本体と、
前記ポンプ本体の前記第1壁側の外方に、前記第1壁に直交する方向に視て、前記吸入孔に重なる位置および形状からなり、フィルタ部材と、
前記フィルタ部材における少なくとも前記吸入孔に重なる部分と前記第1壁との距離が変化可能に前記フィルタ部材を前記ポンプ本体に保持する保持部材と、
を備え、
前記保持部材は、
前記フィルタ部材の前記吸入孔に重なる部分が前記第1壁から離れている状態において、前記フィルタ部材が前記吸入孔に重なる部分と前記第1壁との間に生じる空間を前記フィルタ部材の外縁または前記保持部材よりも外側に連通する形状である、
ポンプ装置。 - 前記保持部材は、複数の個別保持部材を備え、
前記複数の個別保持部材は、互いに離間し、前記第1壁に直交する方向に視て前記吸入孔を囲む位置に配置される、
請求項1に記載のポンプ装置。 - 前記第1壁に直交する方向に視て、前記フィルタ部材は、前記第1壁よりも小さい、
請求項1または請求項2に記載のポンプ装置。 - 前記フィルタ部材は、
前記第1壁に平行な主面を有する板状であり、
前記主面の形状が変化する可撓性を有する、
請求項1乃至請求項3のいずれかに記載のポンプ装置。 - 前記保持部材は、前記フィルタ部材を前記第1壁に接着する接着部材である、
請求項4に記載のポンプ装置。 - 前記保持部材は、前記フィルタ部材の全体を前記第1壁に直交する方向に移動可能に保持する、
請求項1乃至請求項4のいずれかに記載のポンプ装置。
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US20220275872A1 (en) * | 2018-10-22 | 2022-09-01 | Murata Manufacturing Co., Ltd. | Valve and gas control device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5781500U (ja) * | 1980-11-06 | 1982-05-20 | ||
JP2013502537A (ja) * | 2009-08-24 | 2013-01-24 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 圧力補正装置を備えた真空ポンプ |
WO2019131706A1 (ja) * | 2017-12-28 | 2019-07-04 | 株式会社村田製作所 | ポンプ |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5781500U (ja) * | 1980-11-06 | 1982-05-20 | ||
JP2013502537A (ja) * | 2009-08-24 | 2013-01-24 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 圧力補正装置を備えた真空ポンプ |
WO2019131706A1 (ja) * | 2017-12-28 | 2019-07-04 | 株式会社村田製作所 | ポンプ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20220275872A1 (en) * | 2018-10-22 | 2022-09-01 | Murata Manufacturing Co., Ltd. | Valve and gas control device |
US11686396B2 (en) * | 2018-10-22 | 2023-06-27 | Murata Manufacturing Co., Ltd. | Valve and gas control device |
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