WO2022110466A1 - 微型水泵及电子设备 - Google Patents
微型水泵及电子设备 Download PDFInfo
- Publication number
- WO2022110466A1 WO2022110466A1 PCT/CN2020/140111 CN2020140111W WO2022110466A1 WO 2022110466 A1 WO2022110466 A1 WO 2022110466A1 CN 2020140111 W CN2020140111 W CN 2020140111W WO 2022110466 A1 WO2022110466 A1 WO 2022110466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impeller
- water pump
- cavity
- base
- upper cover
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 230000000903 blocking effect Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
- A61M60/232—Centrifugal pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/81—Pump housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0633—Details of the bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
- F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
- F04D29/0473—Bearings hydrostatic; hydrodynamic for radial pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Definitions
- the invention relates to the field of fluid machinery, in particular to a miniature water pump and electronic equipment.
- the heating element of the electronic device will generate a lot of heat during the working process. If the heat is not discharged in time, the internal temperature of the electronic device will rise sharply, thereby affecting the working efficiency of the electronic components in the electronic device.
- the use of liquid cooling is a better cooling method.
- the heat radiated by the heating element is absorbed by connecting the heating element to the cooling pipeline, and the high temperature cooling liquid that absorbs heat is discharged by the flow of the cooling liquid in the pipeline. Go and refill cold coolant.
- a micro water pump is generally connected to the pipeline, and the flow speed of the cooling liquid is accelerated by the micro water pump.
- the related art miniature water pump includes an upper cover and a lower cover assembled together, an impeller and a magnetic piece mounted on the lower cover, the upper cover and the lower cover enclose a shape receiving space, and the magnetic piece drives the impeller.
- the impeller rotates under the action of the magnetic field force generated by the magnetic element, and the micro-impeller drives the cooling liquid to circulate.
- the impeller will float up and down and collide and rub against the upper cover, thereby generating noise, increasing the rotational resistance of the impeller, and reducing the driving force of the micro water pump. efficiency.
- the purpose of the present invention is to provide a water pump with low noise and high driving efficiency.
- a miniature water pump comprising a pump body and a driving mechanism, the pump body having a cavity, a liquid inlet hole communicating with the cavity, and a liquid outlet hole communicating with the cavity , the driving mechanism is installed on the pump body to drive the liquid to enter the cavity from the liquid inlet hole and discharge from the liquid outlet hole;
- the pump body includes a base, an upper cover and a blocking member, the base
- the cavity is formed by being assembled with the upper cover, the upper cover includes a fixed wall located in the cavity, and the blocking member is protruded on the fixed wall to prevent the driving mechanism from interacting with The stationary walls collide and rub.
- the driving mechanism includes an impeller, a stator and a rotor, the impeller is arranged in the cavity, the base is provided with a rotating shaft, the impeller is rotatably connected to the rotating shaft, and the rotor is mounted on the impeller,
- the stator is mounted on the base and used to drive the rotor to rotate, and the impeller is opposite to the blocking member and is arranged at intervals.
- the fixed wall is provided with a fixed groove
- the blocking member is installed in the fixed groove and protrudes from the surface of the fixed wall, along the direction of the rotation axis of the impeller, the blocking member and the The projections of the impellers coincide at least partially.
- the barrier is in the shape of a ring sheet, which is made of polyimide.
- the impeller includes an impeller body, a first installation groove provided at one end of the impeller body, and a blade provided on the outer side wall of the impeller body, the blade body is rotatably connected to the rotating shaft, and the rotor is An annular magnet installed in the first installation groove.
- the rotor is fixed to the inner side wall of the first installation groove or the outer side wall of the impeller body by gluing.
- a side of the base facing away from the upper cover is provided with a second installation groove, and the stator is embedded in the second installation groove.
- the micro water pump further includes a circuit board mounted on the base, a third installation groove is provided on the side of the base facing away from the upper cover, and the circuit board is embedded in the third installation groove , the circuit board is electrically connected to the stator through a cable.
- the micro water pump further includes a sealing ring, one of the base and the upper cover is provided with a sealing groove surrounding the cavity, the sealing ring is installed in the sealing groove and is connected by the base and the upper cover. The upper cover is squeezed to seal the cavity.
- the above-mentioned miniature water pump is provided with a blocking member on the upper cover.
- the impeller floats up and down during operation, the impeller and the blocking member collide and rub, so as to prevent the impeller from colliding with the blocking member during the rotation process.
- the cover can reduce the noise generated by the micro water pump during operation; the blocking member has elasticity and low friction coefficient, which helps to improve the driving efficiency of the micro water pump.
- the micro water pump includes a pump body and a driving mechanism, the pump body includes a base and an upper cover, and the driving mechanism includes an impeller.
- FIG. 2 is a schematic three-dimensional structure diagram of the base shown in FIG. 1 .
- FIG. 3 is a schematic three-dimensional structural diagram of the base shown in FIG. 1 at another angle.
- FIG. 4 is a schematic three-dimensional structural diagram of the upper cover shown in FIG. 1 .
- FIG. 5 is a schematic three-dimensional structure diagram of the impeller shown in FIG. 1 .
- FIG. 6 is a schematic structural diagram of the micro water pump shown in FIG. 1 after being assembled.
- FIG. 7 is a schematic cross-sectional structure diagram of FIG. 6 along the A-A direction.
- FIG. 8 is an enlarged schematic view of the structure at B in FIG. 7 .
- an embodiment of the present invention provides a micro water pump 100 , which includes a pump body 10 and a driving mechanism 20 , and the pump body 10 has a cavity 18 and a liquid inlet hole communicating with the cavity 18 . 116 and the liquid outlet hole 117 communicating with the cavity 18 .
- the driving mechanism 20 is installed on the pump body 10 to drive the liquid to enter the cavity 18 from the liquid inlet hole 116 and discharge from the liquid outlet hole 117 .
- the pump body 10 includes a base 11 , an upper cover 12 assembled with the base 11 , a blocking member 13 installed on the upper cover 12 , a rotating shaft 14 installed on the base 11 , and clamped on the base 11 .
- the base 11 and the upper cover 12 are assembled to form the cavity 18 .
- the sealing ring 15 surrounds the cavity 18 and is clamped and squeezed between the base 11 and the upper cover 12 . to seal the cavity 18 .
- the driving mechanism 20 is electrically connected to the circuit board 16 to control the operation of the driving mechanism 20 .
- the upper cover 12 includes a fixed wall 1221 located in the cavity 18 , and the blocking member 13 is protruded from the fixed wall 1221 to prevent the driving mechanism 20 from colliding with the fixed wall 1221 during rotation. and friction.
- the blocking member 13 is in the shape of a ring sheet, which is made of polyimide.
- the base 11 includes a square-shaped base 111 , a first recess 112 disposed on the opposite side of the base 111 and the upper cover 12 , and a portion from the base 111 .
- the bosses 113 protruding from the first concave portion 112 , the first concave holes 114 provided on the bosses 113 , the second concave holes 115 provided on the inner bottom wall of the first concave holes 114 , pass through the The plurality of first fixing holes 118 of the base body 111 and the second installation grooves 119 and the third installation grooves 1111 are provided on the side of the base body 111 away from the upper cover 12 .
- the first concave portion 112 and the second installation groove 119 are both in ring shape, and the inner diameter of the first concave portion 112 is larger than the outer diameter of the second installation groove 119, so that the second installation groove 119 surrounded by it.
- the liquid inlet hole 116 and the liquid outlet hole 117 communicate with the first concave portion 112 respectively.
- the third installation groove 1111 is elongated, and the circuit board 16 is installed in the third installation groove 1111 .
- the rotating shaft 14 is substantially cylindrical, and one end thereof is fixed in the second concave hole 115 of the base 11 . Specifically, the rotating shaft 14 is fixed in the second concave hole 115 by glue. In order to increase the firmness of the bonding between the rotating shaft 14 and the base 11 , a plurality of dimples 141 are provided on the outer circumference of the rotating shaft 14 . When the glue is cured, the firmness of the rotating shaft 14 on the base 11 can be enhanced. In other embodiments, the rotating shaft 14 may be formed on the base 11 by over-molding.
- the upper cover 12 includes a cover body 121 , a second concave portion 122 disposed on the side of the cover body 121 close to the base 11 and having a fixed wall 1221 , a fixed groove 123 disposed on the fixed wall 1221 , a surrounding The sealing groove 124 of the second concave portion 122 , the convex post 125 provided on the fixing wall 1221 , the third concave hole 126 provided on the convex post 125 , and a plurality of second fixing holes penetrating through the cover 121 . 127.
- the second concave portion 122 and the first concave portion 112 are disposed correspondingly, and the fixing wall 1221 is disposed opposite to the boss 113 .
- the fixing groove 123 is in a ring shape, and the blocking member 13 is installed in the fixing groove 123 and protrudes from the surface of the fixing wall 1221 .
- the sealing groove 124 may also be provided on the base 11 , or the base 11 and the upper cover 12 are both provided with the sealing groove 124 at corresponding positions.
- the base 11 and the upper cover 12 are assembled together, and the end of the rotating shaft 14 away from the base 11 is installed on the upper cover
- the screw 17 is screwed into the first fixing hole 118 and the second fixing hole 127 to tightly fit the base body 111 and the cover body 121 together.
- the first concave portion 112 and the second concave portion 122 are closed and connected to form the cavity 118
- the sealing ring 15 is installed in the sealing groove 124 and pressed by the seat body 111 and the cover body 121 ,
- the cavity 18 is thereby sealed.
- the driving mechanism 20 includes an impeller 21 disposed in the cavity 18 , a stator 22 fixed in the second installation groove 119 of the base 11 , and a rotor 23 fixedly connected to the impeller 21 . .
- the impeller 21 includes a cylindrical impeller body 211 , a cylindrical first installation groove 212 provided at one end of the impeller body 211 , a blade 213 provided on the outer side wall of the impeller body 211 , The rotating part 214 protruding from the inner bottom wall of the first installation groove 212 and the shaft hole 215 passing through the rotating part 214 and the impeller body 211 are provided.
- the rotor 23 is in the shape of a ring, which is fixed to the inner side wall of the first installation groove 212 or the outer side wall of the impeller body 211 by gluing.
- the impeller body 211 and the rotor 23 are covered and the boss 113 of the base 11 is accommodated therein, the rotating part 214 is accommodated in the first concave hole 114 , and the shaft hole 215
- the blade body 211 is rotatably connected to the rotating shaft 14 by being sleeved on the rotating shaft 14 .
- the rotor 22 is a ring magnet.
- the rotor 23 may be fixed to the outer side wall of the impeller body 211 by gluing.
- the stator 22 is used to drive the rotor 23 to rotate, and the circuit board 16 is electrically connected to the stator 22 through a cable, so as to control the rotation of the rotor 23 through the stator 22 .
- the blade body 211 of the impeller 21 is opposite to and spaced apart from the blocking member 13 . Along the direction of the rotation axis S of the impeller 21 , the projections of the blocking member 13 and the impeller body 211 at least partially overlap.
- the circuit board 16 supplies a variable frequency current to the stator 22 .
- the stator 22 According to the principle of electromagnetic induction, the stator 22 generates a rotating magnetic field, and the rotor 23 is subjected to ampere force in the rotating magnetic field.
- the rotating rotor 23 drives the impeller 21 to rotate.
- the liquid enters the cavity 18 from the liquid inlet 116, rotates at a high speed and performs centrifugal motion under the push of the impeller 21, when the liquid reaches the liquid outlet 117, the liquid is thrown out from the liquid outlet 117, and the liquid is thrown away
- the pressure in the cavity 18 is reduced, and is much lower than the atmospheric pressure, so that the external fluid is replenished into the cavity 18 from the liquid inlet 116 under the action of atmospheric pressure, and the above is repeated. action to achieve liquid delivery.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vascular Medicine (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
一种微型水泵包括泵体(10)和驱动机构(20),泵体(10)具有腔体(18)、进液孔(116)及出液孔(117),驱动机构(20)安装于泵体(10)以驱动液体从进液孔(116)进入腔体(18)并从出液孔(117)排出。泵体(10)包括底座(11)、上盖(12)及阻隔件(13),底座(11)与上盖(12)组接形成腔体(18),上盖(12)包括位于腔体(18)中的固定壁(1221),阻隔件(13)凸设于固定壁(1221)以防止驱动机构(20)在旋转过程中与固定壁(1221)发生碰撞和摩擦。该泵可以避免驱动机构碰撞上盖或与上盖发生摩擦,提升微型水泵的驱动效率并降低工作噪音。
Description
本发明涉及流体机械领域,尤其涉及微型水泵及电子设备。
电子设备的发热元件在工作工程中会产生大量的热量,若不将热量及时排出则会造成所述电子设备内部温度急剧升高,从而影响所述电子设备内的电子元器件的工作效率。而使用液体冷却是一种较好的冷却方法,通过将所述发热元件与冷却管路连接来所述吸收发热元件散发的热量,利用管路内的冷却液流动将吸收热量的高温冷却液排走并补充低温的冷却液。为了加快冷却液的流动,一般在将微型水泵接入所述管路,通过所述微型水泵加速所述冷却液的流动速度。
相关技术的微型水泵包括组接在一起的上盖和下盖以及安装于下盖的叶轮和磁性件,所述上盖和所述下盖围合形状收容空间,所述磁性件驱动所述叶轮在所述收容空间内转动,所述叶轮在所述磁性件产生的磁场力作用下旋转,由所述微型叶轮带动冷却液循环。但是,在所述微型水泵工作过程中,所述叶轮会上下浮动而与所述上盖发生碰撞和摩擦,从而产生噪音,并增加了所述叶轮的旋转阻力,降低了所述微型水泵的驱动效率。
因此有必要研究一种新型的微型水泵来解决上述问题。
本发明的目的在于提供一种噪音低、驱动效率高的水泵。
本发明的目的采用如下技术方案实现:一种微型水泵,其包括泵体和驱动机构,所述泵体具有腔体、连通所述腔体的进液孔及连通所述腔体的出液孔,所述驱动机构安装于所述泵体以驱动液体从所述进液孔进入所述腔体并从所述出液孔排出;所述泵体包括底座、上盖及阻隔件,所述底座与所述上盖组接形成所述腔体,所述上盖包括位于所述腔体中的固定壁,所述阻隔件凸设于所述固定壁以防止所述驱动机构在旋转过程中与所述固定壁发生碰撞和摩擦。
优选地,所述驱动机构包括叶轮、定子及转子,所述叶轮设于所述腔体内,所述底座设有转轴,所述叶轮与所述转轴转动连接,所述转子安装于所述叶轮,所述定子安装于所述底座并用于驱动所述转子转动,所述叶轮与所述阻隔件相对且间隔设置。
优选地,所述固定壁设有固定槽,所述阻隔件安装于所述固定槽并凸出所述固定壁的表面,沿着所述叶轮的旋转轴心方向,所述阻隔件和所述叶轮的投影至少部分重合。
优选地,所述阻隔件呈环薄片形状,其由聚酰亚胺制成。
优选地,所述叶轮包括叶轮本体、设于所述叶轮本体一端的第一安装槽以及设于所述叶轮本体外侧壁上的叶片,所述叶片本体与所述转轴转动连接,所述转子为安装于所述第一安装槽内的环形磁钢。
优选地,所述转子通过胶合固定于所述第一安装槽的内侧壁或所述叶轮本体的外侧壁。
优选地,所述底座背对所述上盖的一侧设有第二安装槽,所述定子嵌于所述第二安装槽内。
优选地,所述微型水泵还包括安装于所述底座的电路板,所述底座背对所述上盖的一侧设有第三安装槽,所述电路板嵌于所述第三安装槽内,所述电路板通过线缆电连接所述定子。
优选地,所述微型水泵还包括密封圈,所述底座和所述上盖中的一个设有环绕所述腔体的密封槽,所述密封圈安装于所述密封槽并被所述底座和所述上盖挤压,以密封所述腔体。
本发明实施方式相对于现有技术而言,上述微型水泵通过在上盖上设置阻隔件,当叶轮工作过程中上下浮动时,叶轮与阻隔件碰撞和摩擦,避免了叶轮在旋转过程中撞击上盖,从而减小了上述微型水泵的在工作时产生的噪音;阻隔件具有弹性且摩擦系数低,有助于提升上述微型水泵的驱动效率。
图1为本发明提供的微型水泵的爆炸结构示意图,所述微型水泵包括泵体和驱动机构,所述泵体包括底座和上盖,所述驱动机构包括叶轮。
图2为图1所示的所述底座的立体结构示意图。
图3为图1所示的所述底座在另一角度的立体结构示意图。
图4为图1所示的所述上盖的立体结构示意图。
图5为图1所示的所述叶轮的立体结构示意图。
图6为图1所示的所述微型水泵组装后的结构示意图。
图7为图6沿A-A方向的剖面结构示意图。
图8为图7中B处的放大结构示意图。
下面结合附图和实施方式对本发明作进一步说明。
需要说明的是,本发明实施例中所有方向性指示(诸如上、下、左、右、前、后、内、外、顶部、底部……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。
还需要说明的是,当元件被称为“固定于”或“设置于”另一个元件上时,该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件,它可以是直接连接另一个元件或者可能同时存在居中元件。
如图1-8所示,本发明的实施例提出一种微型水泵100,其包括泵体10和驱动机构20,所述泵体10具有腔体18、连通所述腔体18的进液孔116及连通所述腔体18的出液孔117。所述驱动机构20安装于所述泵体10以驱动液体从所述进液孔116进入所述腔体18并从所述出液孔117排出。
其中,所述泵体10包括底座11、与所述底座11组接的上盖12、安装于所述上盖12上的阻隔件13、安装于所述底座11上的转轴14、夹设于所述底座11和所述上盖12之间的密封圈15、固定于所述底座11外壁上的电路板16以及将所述底座11和所述上盖12固定在一起的螺丝17。所述底座11与所述上盖12组接形成所述腔体18,所述密封圈15环绕所述腔体18并被夹持挤压于所述底座11与所述上盖12之间,以密封所述腔体18。所述驱动机构20与所述电路板16电连接,以控制所述驱动机构20的工作。所述上盖12包括位于所述腔体18中的固定壁1221,所述阻隔件13凸设于所述固定壁1221以防止所述驱动机构20在旋转过程中与所述固定壁1221发生碰撞和摩擦。可选地,所述阻隔件13呈环薄片形状,其由聚酰亚胺(Polyimide)制成。
具体地,如图1-图3所示,所述底座11包括方形状的座体111、设于所述座体111与所述上盖12相对一侧上的第一凹部112、自所述第一凹部112凸伸出的凸台113、设于所述凸台113上的第一凹孔114、设于所述第一凹孔114内底壁上的第二凹孔115、贯通所述座体111的多个第一固定孔118以及设于所述座体111远离所述上盖12一侧上的第二安装槽119和第三安装槽1111。其中,所述第一凹部112和所述第二安装槽119均呈环形状,所述第一凹部112的内径大于所述第二安装槽119的外径,以将所述第二安装槽119包围于其中。所述进液孔116和所述出液孔117分别与所述第一凹部112连通。所述第三安装槽1111呈长条状,所述电路板16安装于所述第三安装槽1111内。
所述转轴14大致呈圆柱体状,其一端固定在所述底座11的所述第二凹孔115中。具体地,所述转轴14通过胶水粘接固定在所述第二凹孔115中。为了增加所述转轴14与所述底座11粘接的牢固性,所述转轴14的外周设有多个凹坑141,所述凹坑141可更加所述转轴14附着、容纳胶水的量,从而在胶水固化时能加强所述转轴14固定在所述底座11上的牢固性。在其他实施方式中,所述转轴14可通过二次注塑的方式形成于所述底座11。
所述上盖12包括盖体121、设于所述盖体121靠近所述底座11一侧上并具有固定壁1221的第二凹部122、设于所述固定壁1221上的固定槽123、环绕所述第二凹部122的密封槽124、设于所述固定壁1221上的凸柱125、设于凸柱125上的第三凹孔126以及贯通所述盖体121的多个第二固定孔127。其中,所述第二凹部122和所述第一凹部112对应设置,所述固定壁1221与所述凸台113相对设置。所述固定槽123呈环形状,所述阻隔件13安装于所述固定槽123并凸出所述固定壁1221的表面。
在其他实施方式中,所述密封槽124也可以设置在所述底座11,或者,所述底座11和所述上盖12在对应的位置处均设有所述密封槽124。
请一并参照图1至图8,组装所述泵体10时,所述底座11和所述上盖12组接在一起,所述转轴14远离所述底座11的一端安装于所述上盖12的第三凹孔126中,螺丝17旋合进所述第一固定孔118和所述第二固定孔127以将所述座体111和所述盖体121紧密贴合在一起。所述第一凹部112和所述第二凹部122封闭连接形成所述腔体118,所述密封圈15安装于所述密封槽124并被所述座体111和所述盖体121挤压,从而密封所述腔体18。
进一步地,所述驱动机构20包括设于所述腔体18内的叶轮21、固定在所述底座11的所述第二安装槽119内的定子22以及与所述叶轮21固定连接的转子23。
具体地,所述叶轮21包括呈圆柱体状的叶轮本体211、设于所述叶轮本体211一端呈圆柱形的第一安装槽212、设于所述叶轮本体211外侧壁上的叶片213、自所述第一安装槽212的内底壁凸伸出的转动部214以及贯通所述转动部214和所述叶轮本体211的轴孔215。所述转子23呈环形状,其通过胶合的方式固定于所述第一安装槽212的内侧壁或所述叶轮本体211的外侧壁。所述叶轮本体211和所述转子23包覆并将所述底座11的所述凸台113收容于其中,所述转动部214则收容在所述第一凹孔114中,所述轴孔215套在所述转轴14,以使所述叶片本体211与所述转轴14转动连接。可选地,所述转子22为环形磁钢。
在其他实施方式中,所述转子23可通过胶合的方式固定于所述叶轮本体211的外侧壁。
所述定子22用于驱动所述转子23转动,所述电路板16通过线缆电连接所述定子22,以通过所述定子22控制所述转子23的旋转。所述叶轮21的叶片本体211与所述阻隔件13相对且间隔设置,沿着所述叶轮21的旋转轴心S方向,所述阻隔件13和所述叶轮本体211的投影至少部分重合。
在所述微型水泵100的工作过程中,所述电路板16给所述定子22通变频电流,根据电磁感应原理,所述定子22产生旋转磁场,所述转子23在旋转磁场中受安培力的作用发生旋转,旋转的所述转子23带动所述叶轮21旋转。液体从所述进液口116进入所述腔体18,在所述叶轮21的推动下高速旋转并做离心运动,液体到达所述出液口117时从出液口117甩出,液体被甩出后,所述腔体18中的压强减小,且远小于大气压力,使得外界的流体在大气压强的作用下从所述进液口116补充进所述腔体18中,重复地实现上述的动作,实现液体的输送。
以上所述的仅是本发明的实施方式,在此应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出改进,但这些均属于本发明的保护范围。
Claims (9)
- 一种微型水泵,其特征在于,其包括泵体和驱动机构,所述泵体具有腔体、连通所述腔体的进液孔及连通所述腔体的出液孔,所述驱动机构安装于所述泵体以驱动液体从所述进液孔进入所述腔体并从所述出液孔排出;所述泵体包括底座、上盖及阻隔件,所述底座与所述上盖组接形成所述腔体,所述上盖包括位于所述腔体中的固定壁,所述阻隔件凸设于所述固定壁以防止所述驱动机构在旋转过程中与所述固定壁发生碰撞和摩擦。
- 根据权利要求1所述的微型水泵,其特征在于,所述驱动机构包括叶轮、定子及转子,所述叶轮设于所述腔体内,所述底座设有转轴,所述叶轮与所述转轴转动连接,所述转子安装于所述叶轮,所述定子安装于所述底座并用于驱动所述转子转动,所述叶轮与所述阻隔件相对且间隔设置。
- 根据权利要求2所述的微型水泵,其特征在于,所述固定壁设有固定槽,所述阻隔件安装于所述固定槽并凸出所述固定壁的表面,沿着所述叶轮的旋转轴心方向,所述阻隔件和所述叶轮的投影至少部分重合。
- 根据权利要求1-3任一项所述的微型水泵,其特征在于,所述阻隔件呈环薄片形状,其由聚酰亚胺制成。
- 根据权利要求2所述的微型水泵,其特征在于,所述叶轮包括叶轮本体、设于所述叶轮本体一端的第一安装槽以及设于所述叶轮本体外侧壁上的叶片,所述叶片本体与所述转轴转动连接,所述转子为安装于所述第一安装槽内的环形磁钢。
- 根据权利要求5所述的微型水泵,其特征在于,所述转子通过胶合固定于所述第一安装槽的内侧壁或所述叶轮本体的外侧壁。
- 根据权利要求5所述的微型水泵,其特征在于,所述底座背对所述上盖的一侧设有第二安装槽,所述定子嵌于所述第二安装槽内。
- 根据权利要求7所述的微型水泵,其特征在于,所述微型水泵还包括安装于所述底座的电路板,所述底座背对所述上盖的一侧设有第三安装槽,所述电路板嵌于所述第三安装槽内,所述电路板通过线缆电连接所述定子。
- 根据权利要求1所述的微型水泵,其特征在于,所述微型水泵还包括密封圈,所述底座和所述上盖中的一个设有环绕所述腔体的密封槽,所述密封圈安装于所述密封槽并被所述底座和所述上盖挤压,以密封所述腔体。
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JP2003161284A (ja) * | 2001-11-27 | 2003-06-06 | Matsushita Electric Ind Co Ltd | 薄型渦流ポンプとこれを備えた冷却システム |
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