WO2018079375A1 - 液体ポンプ - Google Patents
液体ポンプ Download PDFInfo
- Publication number
- WO2018079375A1 WO2018079375A1 PCT/JP2017/037688 JP2017037688W WO2018079375A1 WO 2018079375 A1 WO2018079375 A1 WO 2018079375A1 JP 2017037688 W JP2017037688 W JP 2017037688W WO 2018079375 A1 WO2018079375 A1 WO 2018079375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge
- suction
- side tank
- pump chamber
- liquid
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 97
- 238000005192 partition Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
-
- 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
- F04B43/0009—Special features
-
- 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
- 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
-
- 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
- F04B53/1065—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its centre
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/60—Fluid transfer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Definitions
- the present invention relates to a liquid pump in which the volume of a pump chamber is periodically expanded and contracted so that liquid is sucked from the suction port and discharged from the discharge port.
- a part of the wall defining the pump chamber is vibrated so as to change the volume of the pump chamber, whereby the liquid is sucked from the suction port and discharged.
- a laminated film vibrator (bimorph vibrator) in which two piezoelectric elements are bonded is arranged as a part of the wall of a pump chamber, and an AC voltage is applied to the film vibrator.
- a liquid pump that conveys liquid by expanding and contracting the volume of the pump chamber by vibrating the vibrator.
- check valves are arranged between the suction port for sucking the liquid and the pump chamber and between the discharge port for discharging the liquid and the pump chamber, respectively, and when the pump chamber expands, the liquid suction port Then, the air is sucked into the pump chamber through the check valve on the suction port side, and when the pump chamber contracts, the liquid in the pump chamber is discharged from the discharge port through the check valve on the discharge port side.
- the liquid pump as described above can usually change the liquid discharge amount by changing the vibration frequency of the vibrator.
- the vibration frequency is increased in order to increase the discharge amount, particularly in the tank on the discharge side, bubbles that propagate in the liquid generate bubbles containing air in the vicinity of the liquid level in the tank.
- the air that has become diffused into the liquid may be discharged from the discharge port together with the liquid.
- the effect of reducing the influence of the fluid resistance is reduced by gradually reducing the air pocket, and as a result, there arises a problem that the discharge performance of the pump cannot be maintained.
- an object of the present invention is to provide a liquid pump that suppresses the discharge of air in the air reservoir formed in the discharge side tank.
- the present invention A suction port for sucking liquid; A pump chamber communicating with the suction port, wherein a part of the wall defining the pump chamber is a vibrating wall portion that can vibrate so as to vary the volume of the pump chamber; and A discharge side communication passage extending from the pump chamber; A discharge-side tank portion that stores the liquid that is communicated with the pump chamber via the discharge-side communication passage and is delivered from the pump chamber; A discharge-side check valve disposed between the discharge-side tank portion and the pump chamber so as to allow fluid flowing from the pump chamber to the discharge-side tank portion but not reverse fluid; A discharge port for discharging the liquid in the discharge side tank section; A liquid pump configured to suck liquid from the suction port and discharge from the discharge port in accordance with vibration of the vibrating wall,
- the discharge side tank portion has first and second inner side surfaces facing each other in the horizontal direction in the installed state of the liquid pump, the discharge port is formed on the first inner side surface, and the second inner side surface An opening of the discharge side communication passage is formed, and an air reservoir
- the partition wall portion is provided between the opening of the discharge side communication passage and the air reservoir in the discharge side tank portion, air in the air reservoir is contained near the liquid surface in the discharge side tank portion. Even if bubbles are generated, the air hardly diffuses downward. Thereby, it becomes possible to suppress discharge of air from the discharge port.
- a space can be provided between the partition wall and the first inner surface.
- the partition wall portion may be a cylindrical partition wall portion protruding from the second inner side surface so as to surround the opening of the discharge side communication passage.
- the opening of the discharge side communication passage and the discharge port may be arranged below the center position in the vertical direction of the discharge side tank.
- the space above the discharge port and the discharge side communication passage in the discharge side tank portion becomes larger, and it becomes possible to further increase the air pool. It is also possible to more reliably prevent air from being discharged from the discharge port by increasing the distance between the air reservoir and the discharge port.
- a housing comprising a first housing part, a second housing part, and a third housing part, each having a plate shape as a whole, wherein the second housing part is formed by the first housing part and the third housing part. It has a housing formed so as to overlap each other in a sandwiched state,
- the first housing portion includes the suction port and the discharge port, and further includes a first discharge side tank recess that opens toward the second housing portion with the first inner surface as a bottom surface.
- the second housing portion includes a second discharge side tank recess that opens toward the first housing portion with the second inner surface as a bottom surface, and a third housing portion on the opposite side of the second discharge side tank recess.
- a pump chamber recess opening toward the The vibrating wall portion is a membrane-like vibrator sandwiched between the second housing portion and the third housing portion so as to cover an opening portion of the pump chamber recess,
- the discharge side tank portion may be constituted by the first discharge side tank recess and the second discharge side tank recess.
- a suction-side tank portion that is disposed between the suction port and the pump chamber and stores liquid sucked from the suction port;
- a suction side communication passage communicating the suction side tank portion and the pump chamber;
- the suction side communication passage is arranged so as to cover the opening on the pump chamber side from the pump chamber side so that the fluid from the suction side tank portion to the pump chamber is allowed to pass but the fluid in the opposite direction is not allowed to pass.
- the suction side tank portion has first and second inner side surfaces facing each other in the horizontal direction in the installed state of the liquid pump, and the suction port is formed on the first inner side surface of the suction side tank, An opening on the suction side tank portion side of the suction side communication passage is formed on the second inner side surface of the suction side tank, and the opening in the suction side tank portion and the space above the suction port are formed.
- An air pocket is formed,
- the second inner side surface of the suction side tank covers the opening portion on the suction side tank side as viewed from the air reservoir side at least above the opening portion on the suction side tank side.
- a partition wall portion projecting from the suction side tank toward the first inner surface of the suction side tank can be further provided.
- the suction capacity of the liquid pump can be stabilized. Further, by providing the partition wall also in the suction side tank, it is possible to prevent the air in the suction side tank from being sucked into the pump chamber side.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2.
- FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. It is a front view of the 2nd housing in the liquid pump of FIG.
- a liquid pump 10 attaches a suction nozzle 12 for attaching a suction side tube (not shown) and a discharge side tube (not shown). And a housing 16 having a discharge nozzle 14 for the purpose.
- a film-like vibrator 18 having two piezoelectric elements is arranged. As will be described later, an AC voltage is applied to the piezoelectric element to form the film-like vibrator. By periodically vibrating 18, the liquid is sucked from the suction port 20 of the suction nozzle 12 and discharged from the discharge port 22 of the discharge nozzle 14.
- the liquid pump 10 is adapted to be attached to another device or the like by screws (not shown) inserted into four screw attachment holes 24 formed in the housing 16, with the lower surface 16a of the housing 16 being the lower side. It installs in the attitude
- the “installation state” in this specification means a state where the device is installed in such a posture.
- a suction side tank portion 26 communicated with the suction port 20, a discharge side tank portion 28 communicated with the discharge port 22, and these suction side tank portion 26 and the discharge side tank portion 28.
- a pump chamber 30 communicated with each other is formed.
- a suction-side check valve 32 is disposed between the suction-side tank portion 26 and the pump chamber 30, and the suction-side check valve 32 allows fluid flowing from the suction-side tank portion 26 to the pump chamber 30, but in the opposite direction. Fluid is not allowed to pass through.
- a discharge side check valve 34 is disposed between the discharge side tank portion 28 and the pump chamber 30, and the discharge side check valve 34 allows fluid flowing from the pump chamber 30 toward the discharge side tank portion 28 to pass therethrough.
- a part of the wall constituting the pump chamber 30 is constituted by the film-like vibrator 18.
- the film-like vibrator 18 is bent in a direction in accordance with the polarity of the voltage by applying a voltage to the piezoelectric element 18a, and the liquid pump 10 is installed by applying a periodic voltage. It functions as a vibrating wall portion that bends and vibrates in accordance with the period of the voltage in the horizontal direction in the state (vertical direction in FIG. 3 and horizontal direction in FIG. 4).
- the membrane vibrator 18 vibrates, the volume of the pump chamber 30 periodically expands and contracts.
- the housing 16 includes a first housing part 36, a second housing part 38, and a third housing part 40 each having a plate shape as a whole.
- the first housing part 36 and the second housing part 38 are temporarily fixed by screws 42 (FIGS. 1 and 2) inserted from the first housing part 36.
- Four screws (not shown) are inserted from the side of the third housing part 40 in the state where the third housing part 40 is overlapped so that the second housing part 38 is sandwiched between the first housing part 36 and the first housing part 36.
- the first housing part 36, the second housing part 38, and the third housing part 40 are connected and fixed to each other by being screwed into the housing part 36.
- the film vibrator 18 is sandwiched and held between the second housing part 38 and the third housing part 40.
- the first housing part 36 has a first suction side tank recessed part 26a and a first discharge side tank recessed part 28a that open toward the second housing part 38, respectively.
- the second housing part 38 includes a second suction side tank recessed part 26 b and a second discharge side tank recessed part 28 b that open toward the first housing part 36, respectively.
- the suction-side tank portion 26 is formed by a first suction-side tank recess portion 26a and a second suction-side tank recess portion 26b facing each other
- the discharge-side tank portion 28 is formed by the first discharge-side tank recess portion 28a and the second suction-side tank recess portion 26b. It is formed by the discharge side tank recessed part 28b.
- the second housing portion 38 further includes a pump chamber recess 30a that opens toward the third housing portion 40, a suction side communication passage 44 that communicates the second suction side tank recess 26b and the pump chamber recess 30a, and a second A discharge side communication passage 46 is formed to communicate the discharge side tank recess 28b and the pump chamber recess 30a.
- the suction side check valve 32 is disposed so as to cover and close the opening 44b on the pump chamber 30 side of the suction side communication passage 44, and covers the opening 44b when the pressure in the pump chamber 30 decreases. The deformed part is separated from the opening 44b, and the opening 44b is opened.
- the discharge-side check valve 34 is disposed so as to cover and close the opening 46a on the second discharge-side tank recess 28b side of the discharge-side communication passage 46.
- the discharge-side check valve 34 opens the opening 46a.
- the covering portion is deformed so as to be separated from the opening 46a, and the opening 46a is opened.
- the pump chamber 30 is constituted by a pump chamber recess 30 a formed in the second housing portion 38 and the film-like vibrator 18.
- the discharge-side tank portion 28 includes a first inner side surface 28c and a second inner side surface 28d that face each other in the horizontal direction (left-right direction as viewed in FIG. 4) in the installed state of the liquid pump 10.
- the first inner side surface 28c is the bottom surface of the first discharge side tank recess 28a formed in the first housing portion 36
- the second inner side surface 28d is the second discharge side tank recess 28b formed in the second housing portion 38. It is the bottom.
- a discharge port 22 is formed on the first inner side surface 28c, and an opening 46a of the discharge side communication passage 46 is formed on the second inner side surface 28d.
- the discharge port 22 and the discharge side communication passage 46 are arranged at positions overlapping each other when viewed in the horizontal direction below the center position in the vertical direction of the discharge side tank portion 28. Accordingly, the space above the discharge port 22 and the discharge side communication passage 46 of the discharge side tank portion 28 is wider than the lower space.
- a cylindrical partition wall 48 is provided around the opening 46a so as to protrude from the second inner side surface 28d toward the first inner side surface 28c in a horizontal direction so as to surround the opening 46a.
- the cylindrical partition wall portion 48 protrudes partway up to the first inner side surface 28c in the discharge side tank portion 28, and is spaced from the first inner side surface 28c.
- the suction side tank unit 26 has the same configuration as the discharge side tank unit 28. That is, it has the 1st inner surface 26c and the 2nd inner surface 26d which mutually oppose in the horizontal direction in the installation state of the said liquid pump 10.
- the first inner surface 26c is the bottom surface of the first suction side tank recess 26a formed in the first housing portion 36
- the second inner surface 26d is the second suction side tank recess 26b formed in the second housing portion 38. It is the bottom.
- a suction port 20 is formed in the first inner side surface 26c, and an opening 44a of the suction side communication passage 44 is formed in the second inner side surface 26d.
- the suction port 20 and the suction side communication passage 44 are disposed at positions overlapping each other when viewed in the horizontal direction below the center position of the suction side tank portion 26 in the vertical direction. Accordingly, the space above the suction port 20 and the suction side communication passage 44 of the suction side tank portion 26 is wider than the lower space.
- a cylindrical partition wall 50 is provided around the opening 44a so as to project from the second inner surface 26d toward the first inner surface 26c in a horizontal direction so as to surround the opening 44a.
- the cylindrical partition wall portion 50 projects partway up to the first inner side surface 26c in the suction side tank portion 26, and is spaced from the first inner side surface 26c.
- the suction side tank portion 26 and the discharge side tank portion 28 have a semicircular shape with a slightly depressed center, and are symmetrical to each other.
- the liquid is sucked from the suction port 20 as described above, and the suction-side tank unit 26 and the discharge-side tank unit 28 are separated from each other. It will be filled with. However, when the liquid level is satisfied to some extent, the liquid level does not rise any more, and air reservoirs A1 and A2 are formed in the upper spaces of the suction side tank part 26 and the discharge side tank part 28 as shown in FIG. Is done.
- the cylindrical partition wall portion 48 in the discharge side tank portion 28 is arranged to be lower than the air reservoir A ⁇ b> 2 formed at this time.
- a portion 48a located above the opening 46a of the discharge side communication passage 46 covers the opening 46a when viewed from the air reservoir A2. That is, the portion 48a is positioned between the opening 46a of the discharge side communication passage 46 and the air reservoir A2.
- the flow rate of the liquid discharged from the discharge port 22 is increased by increasing the voltage of the AC voltage applied to the film-shaped vibrator 18 to increase the amplitude of the film-shaped vibrator 18 or increasing the frequency of the AC voltage to form a film shape. It can be increased by increasing the vibration period of the vibrator 18.
- the liquid pump 10 is usually driven at a frequency of about 20 Hz to 120 Hz. In a liquid pump using such a vibrator, when the vibration frequency is increased, a high-frequency pressure vibration is generated particularly in the discharge side tank, and the liquid surface between the air reservoir vibrates violently to form bubbles. Sometimes. When the liquid pump 10 is also driven at a frequency of 100 Hz or more, bubbles may occur on the liquid level L2.
- the cylindrical partition wall 48 is effective in preventing air discharge, but the biggest factor is that the generated bubbles move downward and the cylindrical partition wall 48 becomes an obstacle to physically This is thought to be in the way of obstruction.
- the liquid flowing into the discharge side tank portion 28 from the discharge side communication passage 46 is directed along the second inner side surface 28 d of the discharge side tank portion 28 by the discharge side check valve 34. Therefore, a flow upward from the discharge side communication passage 46 is formed. This upward flow changes its direction to the first inner side surface 28c when it reaches the liquid level L2, and further flows downward along the first inner side surface 28c.
- the cylindrical partition wall portion 48 in the discharge-side tank portion 28 may have a cylindrical shape other than a cylinder, for example, or a flat partition wall portion that extends straight in the horizontal direction at the upper position of the discharge-side communication passage 46.
- the partition wall only needs to be disposed so as to cover the opening 46a when viewed from the air reservoir A2 side at least at the upper position between the discharge port 22 and the opening 46a of the discharge side communication passage 46. It is good also as shapes other than a shape and flat plate shape.
- the vibration wall portion which is a part of the wall constituting the pump chamber 30 may be constituted by an actuator other than the film-like vibrator 18 having a piezoelectric element. Furthermore, since the bubble level is not so much generated in the liquid level L1 in the suction side tank portion 26, the cylindrical partition wall portion 50 in the suction side tank portion 26 is not necessarily required, and the suction performance is stable. When the property does not matter so much, the suction side tank portion 26 may be shaped so that the air reservoir A1 is not formed, or the suction side tank portion 26 itself may be eliminated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
液体を吸引する吸引口と、
該吸引口に連通するポンプ室であって、当該ポンプ室を画定している壁の一部が当該ポンプ室の容積を変動させるように振動可能な振動壁部であるポンプ室と、
該ポンプ室から延びる吐出側連通路と、
該吐出側連通路を介して該ポンプ室に連通し該ポンプ室から送り出された液体を貯留する吐出側タンク部と、
該吐出側タンク部と該ポンプ室との間において、該ポンプ室から該吐出側タンク部に向かう流体は通すがその逆向きの流体は通さないように配置された吐出側チェック弁と、
該吐出側タンク部内の液体を吐出する吐出口と、
を備え、該振動壁部の振動に伴って液体を該吸引口から吸引して該吐出口から吐出するようにされた液体ポンプであって、
該吐出側タンク部は、当該液体ポンプの設置状態における水平方向で互いに対向する第1及び第2内側面を有し、該第1内側面に該吐出口が形成され、該第2内側面に該吐出側連通路の開口部が形成されていて、該吐出側タンク部内の該吐出側連通路の開口部及び該吐出口よりも上側の空間に空気溜りが形成されるようにされており、
該吐出側タンク部内において該吐出側連通路の開口部の少なくとも上側位置で該空気溜り側から見て該開口部を覆うようにして該第2内側面から該第1内側面に向かって突出する隔壁部をさらに有する、液体ポンプを提供することを目的とする。
それぞれ全体として板状とされた、第1ハウジング部、第2ハウジング部、及び第3ハウジング部からなるハウジングであって、該第1ハウジング部と該第3ハウジング部とによって該第2ハウジング部を挟んだ状態で相互に重ね合わせるようにして形成されたハウジングを備え、
該第1ハウジング部は、該吸引口と該吐出口とを有し、さらに該第1内側面を底面とし該第2ハウジング部に向かって開口する第1吐出側タンク凹部を有しており、
該第2ハウジング部は、該第2内側面を底面とし該第1ハウジング部に向かって開口する第2吐出側タンク凹部と、該第2吐出側タンク凹部の反対側で該第3ハウジング部に向かって開口するポンプ室凹部とを有しており、
該振動壁部が、該第2ハウジング部と該第3ハウジング部との間に挟持されて該ポンプ室凹部の開口した部分を覆うようにされた膜状振動子であり、
該吐出側タンク部が該第1吐出側タンク凹部と該第2吐出側タンク凹部とにより構成されているようにすることができる。
該吸引口と該ポンプ室との間に配置され、該吸引口から吸引された液体を貯留する吸引側タンク部と、
該吸引側タンク部と該ポンプ室とを連通する吸引側連通路と、
該吸引側連通路の該ポンプ室側の開口部を該ポンプ室側から覆うように配置され、該吸引側タンク部から該ポンプ室に向かう流体は通すがその逆向きの流体は通さないようにされた吸引側チェック弁と、をさらに備え、
該吸引側タンク部は、当該液体ポンプの設置状態における水平方向で互いに対向する第1及び第2内側面を有し、該吸引側タンクの該第1内側面に該吸引口が形成され、該吸引側タンクの該第2内側面に該吸引側連通路の該吸引側タンク部側の開口部が形成されていて、該吸引側タンク部内の該開口部及び該吸引口よりも上側の空間に空気溜りが形成されるようにされており、
該吸引側タンク部内において該吸引側タンク側の該開口部の少なくとも上側位置で該空気溜り側から見て該吸引側タンク側の該開口部を覆うように該吸引側タンクの該第2内側面から該吸引側タンクの該第1内側面に向かって突出する隔壁部をさらに有するようにすることができる。
Claims (6)
- 液体を吸引する吸引口と、
該吸引口に連通するポンプ室であって、当該ポンプ室を画定している壁の一部が当該ポンプ室の容積を変動させるように振動可能な振動壁部であるポンプ室と、
該ポンプ室から延びる吐出側連通路と、
該吐出側連通路を介して該ポンプ室に連通し該ポンプ室から送り出された液体を貯留する吐出側タンク部と、
該吐出側タンク部と該ポンプ室との間において、該ポンプ室から該吐出側タンク部に向かう流体は通すがその逆向きの流体は通さないように配置された吐出側チェック弁と、
該吐出側タンク部内の液体を吐出する吐出口と、
を備え、該振動壁部の振動に伴って液体を該吸引口から吸引して該吐出口から吐出するようにされた液体ポンプであって、
該吐出側タンク部は、当該液体ポンプの設置状態における水平方向で互いに対向する第1及び第2内側面を有し、該第1内側面に該吐出口が形成され、該第2内側面に該吐出側連通路の開口部が形成されていて、該吐出側タンク部内の該吐出側連通路の開口部及び該吐出口よりも上側の空間に空気溜りが形成されるようにされており、
該吐出側タンク部内において該吐出側連通路の開口部の少なくとも上側位置で該空気溜り側から見て該開口部を覆うようにして該第2内側面から該第1内側面に向かって突出する隔壁部をさらに有する、液体ポンプ。 - 該隔壁部と該第1内側面との間に間隔があけられている、請求項1に記載の液体ポンプ。
- 該隔壁部が該吐出側連通路の該開口部の周りを取り囲むようにして該第2内側面から突出した筒状隔壁部である、請求項2に記載の液体ポンプ。
- 該吐出側連通路の開口部と該吐出口とが、該吐出側タンク部の上下方向での中心位置よりも下方に配置されている、請求項1乃至3のいずれか一項に記載の液体ポンプ。
- それぞれ全体として板状とされた、第1ハウジング部、第2ハウジング部、及び第3ハウジング部からなるハウジングであって、該第1ハウジング部と該第3ハウジング部とによって該第2ハウジング部を挟んだ状態で相互に重ね合わせるようにして形成されたハウジングを備え、
該第1ハウジング部は、該吸引口と該吐出口とを有し、さらに該第1内側面を底面とし該第2ハウジング部に向かって開口する第1吐出側タンク凹部を有しており、
該第2ハウジング部は、該第2内側面を底面とし該第1ハウジング部に向かって開口する第2吐出側タンク凹部と、該第2吐出側タンク凹部の反対側で該第3ハウジング部に向かって開口するポンプ室凹部とを有しており、
該振動壁部が、該第2ハウジング部と該第3ハウジング部との間に挟持されて該ポンプ室凹部の開口した部分を覆うようにされた膜状振動子であり、
該吐出側タンク部が該第1吐出側タンク凹部と該第2吐出側タンク凹部とにより構成されている、請求項1乃至4のいずれか一項に記載の液体ポンプ。 - 該吸引口と該ポンプ室との間に配置され、該吸引口から吸引された液体を貯留する吸引側タンク部と、
該吸引側タンク部と該ポンプ室とを連通する吸引側連通路と、
該吸引側連通路の該ポンプ室側の開口部を該ポンプ室側から覆うように配置され、該吸引側タンク部から該ポンプ室に向かう流体は通すがその逆向きの流体は通さないようにされた吸引側チェック弁と、をさらに備え、
該吸引側タンク部は、当該液体ポンプの設置状態における水平方向で互いに対向する第1及び第2内側面を有し、該吸引側タンクの該第1内側面に該吸引口が形成され、該吸引側タンクの該第2内側面に該吸引側連通路の該吸引側タンク部側の開口部が形成されていて、該吸引側タンク部内の該開口部及び該吸引口よりも上側の空間に空気溜りが形成されるようにされており、
該吸引側タンク部内において該吸引側タンク側の該開口部の少なくとも上側位置で該空気溜り側から見て該吸引側タンク側の該開口部を覆うように該吸引側タンクの該第2内側面から該吸引側タンクの該第1内側面に向かって突出する隔壁部をさらに有する、請求項1乃至5のいずれか一項に記載の液体ポンプ。
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EP17864146.0A EP3534002B1 (en) | 2016-10-27 | 2017-10-18 | Liquid pump |
CN201780066330.2A CN109891096B (zh) | 2016-10-27 | 2017-10-18 | 液体泵 |
JP2018517652A JP6487117B2 (ja) | 2016-10-27 | 2017-10-18 | 液体ポンプ |
KR1020197013322A KR102112980B1 (ko) | 2016-10-27 | 2017-10-18 | 액체 펌프 |
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