JP2009156242A - Flat micropump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat micropump having a compact structure, capable of preventing a reduction in lifetime of a motor due to heat by ensuring heat dissipation space. <P>SOLUTION: The flat micropump comprises a main body 12, a rotor 14 and a stator. The main body 12 includes an inlet port 30, a discharge port 32, a hollow portion formed therein and a connecting surface 22 having a leakage prevention device disposed between a lid part 18 and a bottom part 20. The rotor 14 is arranged in the hollow portion and includes a magnet set 38, an impeller 40 and a shaft 42. The magnet set is bonded to the surface of the impeller, and the rotor rotates around the shaft together with the magnet set and the impeller. The stator is arranged in the hollow portion and includes a plurality of coil sets corresponding to the magnet set in the axial direction. The stator transports fluid from the inlet port to the discharge port by rotating the impeller by the axial magnetic field generated by the coil sets and the magnet set. By generating magnetic flux in the axial direction, the volume is reduced and the pressure and heat dissipation effect at the discharge port of the pump is heightened. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flat micro-type pump, and more particularly to a flat micro-type pump that can reduce the volume and increase the rotational force of the pump, the pressure at the discharge port, and the heat dissipation effect by creating an axial magnetic field. .

  Whether it is a water-cooled heat dissipation system or an area such as a fuel transport device or an artificial heart in a fuel cell, the micropump is a very important component and plays an important role. Therefore, it is a joint goal of designers and producers to design micropumps with good sealing performance and strong rotational force, high fluid discharge pressure and excellent heat dissipation effect.

  The centrifugal pump type operating structure creates a fluid flow by rotating the impeller by the action of the magnetic field generated by energizing the stator coil and the magnetic field generated by the magnet on the rotor. The pump motors are mainly divided into built-in motors and external motors. The advantages and disadvantages of each are as follows.

  (1) The external motor type pump is designed separately from the motor and the main body, and is characterized by transmitting force by a transmission shaft. The merit is that it is easy to assemble and there are few leaks. On the other hand, the demerit is that the space required for assembly is large and the transmission shaft is long, so that the motor rotation shaft and impeller shaft can be aligned. If it is difficult or if the rotation axis of the motor and the shaft of the impeller are not aligned, noise will be generated by the vibration, and the service life of the motor will be shortened.

  (2) The built-in motor pump is designed to fit the motor into the shaft of the impeller. Since the diameter of the motor is limited to the shape of the impeller, the rotational force produced is limited. On the other hand, increasing the diameter of the motor will reduce the size of the blades, limiting the flow rate or pressure during discharge. Therefore, since the motor is confined to the shaft of the impeller, heat that is difficult to diverge and is generated during operation is applied to the motor, which affects its service life.

Taiwan Patent No. 00587784 Taiwan patent No.M321653

  Therefore, since both reduction in volume and low vibration noise are required, many of known micropumps are built-in motor pumps. In addition, the micropumps disclosed and commonly known, for example in the patents Nos. 00587784 and M321653 of the Republic of China, have a radioactive magnetic field design, so low power, low discharge pressure and low motor heat dissipation power etc. With the disadvantages. These are problems that are expected to be solved in the technical field.

  In order to solve the above-mentioned problems, the main object of the present invention is to have a design of a radioactive magnetic field, so that the disadvantages such as low output, low discharge pressure and low motor heat dissipation power can be improved and the volume can be reduced. It is to provide a kind of flat micro type pump that can be achieved.

  In order to achieve the above-mentioned object, the present invention is a main body having one inflow port and one discharge port, in which one hollow portion is formed, A rotor including a bottom, a main body including a connection surface having a leakage prevention device between the lid and the bottom, and one magnet set, one impeller, and one shaft provided in the hollow portion The magnet set is coupled to one surface of the impeller and rotates about the shaft together with the magnet set and the impeller, and the magnet set provided in the hollow portion The stator includes a plurality of coil sets corresponding to each other in the axial direction, and a magnetic field in the axial direction generated by the coil set and the magnet set rotates the impeller to transport liquid from the inlet to the outlet. Special to do Including a stator and to provide a flat-type micro pump for fluid transport.

  In order to achieve the above-mentioned object, the present invention is a main body having one inflow port and one discharge port, in which one hollow portion is formed, The body part and the bottom part of 1 are connected in order, the main body including a connection surface having a leakage prevention device between the lid part and the body part, and one magnet set and 1 provided in the hollow part A rotor including an impeller and one shaft, wherein the magnet set is coupled to one surface of the impeller, and the magnet set and the impeller both rotate about the shaft; and A stator including a plurality of coil sets corresponding to the magnet set in the axial direction provided in the hollow portion in the body portion and the bottom portion, and an axial magnetic field generated by the coil set and the magnet set is Rotating the impeller The stator for transporting the liquid from the inlet to the outlet, and the coil in order to isolate the coil and prevent leakage of the fluid from the connection surface between the body and the bottom Another flat micro-type pump for transporting fluid is provided, including one sealing layer provided in a hollow portion between the bottom portion and the bottom portion.

  The flat micro-type pump of the present invention adopts the design of the magnetic field in the axial direction, sets the magnet set on the impeller, and aligns the magnet set and the coil set in the vertical direction. The pump has a compact structure that eliminates waste of the internal structure. In addition, since the magnet set can match the shape of the spiral pump blades, the motor diameter is increased in a larger space, the rotational force and the pressure at the fluid outlet are increased, and a larger heat dissipation space is secured. The motor can prevent the service life from decreasing due to heat.

  The objects, structural features and functions of the present invention will be further described with reference to the following examples.

  FIG. 1 is an overhead view of a flat micro-type pump according to a first embodiment of the present invention. The flat micro pump 10 according to the first embodiment of the present invention is used to transport a fluid (not shown). The fluid can be coolant in a cold water heat dissipation system, fuel in a fuel cell, or blood circulated in the artificial heart.

  FIG. 2 is a component composition diagram of the flat micro pump according to the first embodiment of the present invention. The flat micro pump 10 according to the first embodiment of the present invention mainly includes a main body 12, a rotor 14, and a stator 16. The main body 12 includes a lid portion 18 and a bottom portion 20. The connection surface 22 between the lid portion 18 and the bottom portion 20 may have a leakage prevention device such as an O-type leakage prevention packing 26 in the groove 24, for example. The main body 12 can create a sealed leak-proof state by applying pressure to the leak-proof packing 26 by fixing and tightening the lid 18 and the bottom 20 using a plurality of screws 28. Moreover, the hollow part (not shown in figure) provided in the inside of the main body 12 is the inlet 30 provided in the side wall of the cover part 18, the discharge port 32, and 1 which does not have lubricating oil. A bearing 36 having a bearing 34 and fixed to the bottom 20 is included. It should be noted that the inflow port 30 and the discharge port 32 are not limited to the lid portion 18, and can be provided in the bottom portion 20 by design change in other embodiments. Also, the bearing 36 can be installed on the lid 18 or both the lid 18 and the bottom 20 can be installed simultaneously.

  The rotor 14 installed in the hollow portion includes one magnet set 38, one impeller 40, and one shaft 42. The magnet set 38 is an annular magnet and is fixed on the lower surface (not shown) of the impeller 40 between the blade 44 and the shaft 42 on the outer circumference of the impeller 40. Can do. Further, the annular magnet is a recess (not shown in the figure) provided on the lower surface of the impeller 40 between the blade 44 and the shaft 42 on the outer periphery of the impeller 40 so as to correspond to the annular magnet. 2) can be fixed by a method such as adhesion or fitting. Then, the shaft 42 is set on the bearing 34 of the bearing 36, and the magnet set 38 and the impeller 40 rotate coaxially about the shaft 42 connected to the bearing 34.

  The stator 16 in the hollow portion is installed in the recess 46 of the bottom portion 20 and includes a plurality of coil sets 48 corresponding to the magnet set 38 in the axial direction and a substrate 50 of the coil set 48. An axial magnetic field generated by the coil set 48 and the magnet set 38 rotates the impeller 40 and transports fluid from the inlet to the outlet. It should be noted that in other embodiments, the magnet set 38 may include a plurality of independent magnets, in which case each magnet corresponds to a coil set 48 of the stator 16 and the impeller 40. It can be fixed to the lower surface of the.

  The main body 12 of the flat micro-type pump 10 has at least one opening (shown in the figure) because the coil set 48 can be electrically connected to the outside by connecting the recess 46 in the main body and the outside of the main body. Not included). One sealing layer (not shown) covers the recess 46 to seal the coil set 48 and the opening, and the sealing layer isolates the fluid from the coil set 48 and opens the opening. To prevent liquid leakage. Further, a separator (not shown) can be provided between the inner wall (not shown) of the main body 12 and the impeller 40, and the separator is connected to the inlet 30 and the drain. It is installed so as to create one high pressure section (not shown) and one low pressure section (not shown) between the outlets 32. The flat micro-type pump 10 of the first embodiment of the present invention drives the coil set 48 by using a driving device (not shown) on the external or internal substrate 50 to move in the axial direction. A fluid can be transported from the inlet 30 to the outlet 32 by generating a magnetic field and rotating a magnet set fixed to the impeller.

  FIG. 3 is a component composition diagram of the flat micro-type pump according to the second embodiment of the present invention. A flat micro-type pump 60 according to the second embodiment of the present invention is used for fluid transportation (not shown in the figure), and mainly includes a sealing layer (shown in the figure) of a main body 62, a rotor 64, a stator 66, and one. (Not shown).

  The main body 62 is composed of one lid 68, one body 70 and one bottom 72 in order. For example, in this embodiment, a leakage prevention device such as an O-type leakage prevention packing 78 can be installed on the connection surface 74 between the lid portion 68 and the body portion 70 in one groove 76. The main body 62 can be sealed to create a leak-proof state by applying pressure to the leak-proof packing 78 by fixing and tightening the lid portion 68, the body portion 70, and the bottom portion 72 using a plurality of screws 80. . Further, a hollow portion (not shown) provided inside the main body 62 is provided with an inflow port 82 formed on the side wall of the lid portion 68, a discharge port 84, and one that does not have lubricating oil. And a bearing 88 having a bearing 86 and fixed to the bottom 72. It should be noted here that the inlet 82 and the outlet 84 are not limited to the lid portion 68, and in other embodiments, can be installed in the body portion 70 by design changes, The installation of the bearing 88 is not limited to the lid portion 68. In other embodiments, the bearing 88 may be fixed to the lid portion 68, and may be fixed to both the lid portion 68 and the bottom portion 72 at the same time.

  The rotor 64 installed in the hollow portion includes one magnet set 90, one impeller 92, and a shaft 94. The magnet set 90 is an annular magnet and is fixed on the lower surface (not shown) of the impeller 92 between the blades 96 and 94 on the outer circumference of the impeller 92. Can do. Further, the annular magnet has a recess (not shown) provided on the lower surface of the impeller 92 between the blade 96 and the shaft 94 on the outer periphery of the impeller 92 so as to correspond to the annular magnet. It can be fixed by a method such as adhesion or fitting. Then, the shaft 94 is set on the bearing 86 of the bearing 88, and the magnet set 90 and the impeller 92 rotate coaxially around the shaft 94 connected to the bearing 86.

  The stator 66 in the hollow portion is installed in a recess 98 between the body portion 70 and the bottom portion 72, and includes a plurality of coil sets 100 corresponding to the magnet set 90 in the axial direction and a substrate 102 of the coils 100. One axial magnetic field generated by the coil set 100 and the magnet set 90 rotates the impeller 92 and transports fluid from the inlet 82 to the outlet 84. It should be noted that in other embodiments, the magnet set 90 can include a plurality of independent magnets, in which case each magnet corresponds to the coil set 100 of the stator 66 and each impeller. It can be fixed to the lower surface of 92.

  The main body 62 of the flat micro pump 60 includes at least one opening 104 provided in the bottom 72. The opening 104 can be connected to the recess 98 in the main body and the outside of the main body 62, and the coil 100 can be electrically connected to the outside through the port opening 104. In another embodiment, the opening 104 is not limited to the bottom 72 but can be provided on the side wall of the body 70.

  The sealing layer is provided in a part of the hollow portion between the body portion 70 and the bottom portion 72, covers the recess 98, isolates the coil set 100, and fluid is between the body portion 70 and the bottom portion 72. Leakage from the connection surface 106 can be prevented, and at the same time, liquid leakage from the opening 104 can be prevented. Further, a separator (not shown) can be provided between the inner wall (not shown) of the main body 62 and the impeller 92, and the separator is connected to the inlet 82 and the drain. One high pressure section (not shown) and one low pressure section (not shown) can be created between the outlets 84. The flat micro-type pump 62 according to the second embodiment of the present invention drives the coil set 100 by using a driving device (not shown) on the external or internal substrate 102 to move in the axial direction. A fluid can be transported from the inlet 82 to the outlet 84 by generating a magnetic field and rotating a magnet set fixed to the impeller.

  Compared with the known technology, the flat micro pump of the present invention is designed to generate a magnetic field in the axial direction, aligns the magnet set with the impeller, and aligns the magnet set and the coil set in the axial direction. The internal structure of the flat micro-type pump of the present invention is made compact and the whole is small. In addition, because the magnet set was designed to fit the shape of the spiral pump blade, increasing the motor diameter in more space increases the rotational force and pressure at the fluid outlet, and also dissipates heat As a result, it was possible to prevent the shortening of the service life of the motor due to heat.

  Although the best mode for carrying out the present invention has been disclosed as described above, these modes do not limit the present invention. Those who have general knowledge in the technical field are within the technical scope of the present invention, both within the scope of the technical idea of the present invention.

1 is an overhead view of a flat micro-type pump according to a first embodiment of the present invention. The component composition figure of the flat type micro type pump of the 1st example of the present invention. The schematic diagram which shows storing the production | generation of an object RNA fragment, and object RNA fragment molecular weight in order of an object RNA fragment number.

Explanation of symbols

10 Flat type micro pump
12 Body
14 Rotor
16 Stator
18 Lid
20 Bottom
22 Connection surface
24 groove
26 O-type leak-proof packing
28 screws
30 Inlet
32 outlet
34 Bearing
36 bearings
38 Magnet set
40 impeller
42 axes
44 feathers
46 dent
48 coils
50 substrates
60 Flat type micro pump
62 body
64 rotor
66 Stator
68 Lid
70 Body
72 bottom
74 Connection surface
76 groove
78 O-type leak-proof packing
80 screws
82 Inlet
84 Outlet
86 bearings
88 bearings
90 magnet set
92 Impeller
94 axes
96 feathers
98 dent
100 coils
102 substrates
104 opening
106 Connection surface

Claims (19)

1 main body having one inflow port and one discharge port, in which one hollow portion is formed inside, between one lid portion, one bottom portion, and between the lid portion and the bottom portion And a main body including a connection surface having a leakage prevention device on
A rotor including one magnet set, one impeller, and one shaft provided in the hollow portion, the magnet set being coupled to one surface of the impeller, and the shaft together with the magnet set and the impeller A rotor characterized by rotating around
A stator including a plurality of coil sets corresponding to the magnet set in the axial direction provided in the hollow portion, and an axial magnetic field generated by the coil set and the magnet set rotating the impeller, A stator characterized by transporting liquid from the inlet to the outlet;
A flat micro pump for transporting fluids.   The flat micro pump according to claim 1, wherein the lid includes one bearing having one bearing that rotates in connection with the shaft.   The flat micro pump according to claim 1, wherein the bottom portion includes one bearing having one bearing that rotates in connection with the shaft.   The flat micro-type pump according to claim 1, wherein the leakage prevention device is a single packing provided between the lid and the bottom.   The said magnet set is one annular magnet, The said annular magnet is provided in the said surface between the several blade | wings in the outer periphery of the said impeller, and the said shaft. Flat type micro pump.   The surface between a plurality of blades on the outer circumference of the impeller and the shaft has one annular recess corresponding to the annular magnet, and the annular magnet is fixed to the annular recess. The flat micro pump according to claim 5.   The flat micro-type pump according to claim 1, wherein the magnet set includes a plurality of magnets, and each of the magnet sets is fixed to the surface of the impeller corresponding to the coil set of the stator.   The flat micro pump according to claim 1, wherein the coil set is sealed by one sealing layer.   The main body further includes at least one opening, the coil set is electrically connected to the outside of the main body via the opening, and the sealing layer includes the coil set and the opening. The flat micro-type pump according to claim 8, which is sealed.   A separator is provided between the inner surface of the main body of the main body and the impeller, and between the inlet and the outlet, and the separator provides a high pressure zone and a low pressure zone. The flat micro-type pump according to claim 1, wherein: 1 body having 1 inflow port and 1 discharge port, and 1 hollow portion formed therein, sequentially connected to 1 lid portion, 1 body portion and 1 bottom portion, The main body including a connection surface having a leakage prevention device between the lid portion and the body portion;
A rotor including one magnet set, one impeller, and one shaft provided in the hollow portion, wherein the magnet set is coupled to one surface of the impeller, and both the magnet set and the impeller are connected to the shaft. A rotor characterized by rotating around
A stator including a plurality of coil sets corresponding to the magnet set in the axial direction provided in the hollow portion at the body portion and the bottom portion, and an axial magnetic field generated between the coil set and the magnet set A stator characterized by transporting liquid from the inlet to the outlet by rotating the impeller;
Including one sealing layer provided in a hollow portion between the body portion and the bottom portion to isolate the coil set and prevent leakage of the fluid from a connection surface between the body portion and the bottom portion. Flat type micro pump for fluid transportation.   The flat micro-type pump according to claim 11, wherein the lid portion includes one bearing having one bearing that rotates in connection with the shaft.   The flat micro pump according to claim 11, wherein the bottom portion includes one bearing having one bearing that rotates in connection with the shaft.   The flat micro-type pump according to claim 11, wherein the leakage prevention device is a single packing provided between the lid portion and the body portion.   The said magnet set is one annular magnet, The said annular magnet is provided in the said surface between the several wing | blade in the outer periphery of the said impeller, and the said axis | shaft. Flat type micro pump.   The surface between a plurality of blades on the outer circumference of the impeller and the shaft has one annular recess corresponding to the annular magnet, and the annular magnet is fixed to the annular recess. The flat micro pump according to claim 15.   The flat micro-type pump according to claim 11, wherein the magnet set includes a plurality of magnets, and each of the magnet sets is fixed to the surface of the impeller corresponding to the coil set of the stator.   The main body further includes at least one opening, and the coil set is electrically connected to the outside of the main body via the opening, and the sealing layer seals the opening. The flat micro-type pump according to claim 11, wherein the pump is a flat micro-type pump.   A separator is provided between the inner surface of the main body of the main body and the impeller, and between the inlet and the outlet, and the separator provides a high pressure zone and a low pressure zone. The flat micro-type pump according to claim 11, wherein:

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