CN108678965B - Fully radiating shielding variable frequency circulating pump - Google Patents
Fully radiating shielding variable frequency circulating pump Download PDFInfo
- Publication number
- CN108678965B CN108678965B CN201810638439.5A CN201810638439A CN108678965B CN 108678965 B CN108678965 B CN 108678965B CN 201810638439 A CN201810638439 A CN 201810638439A CN 108678965 B CN108678965 B CN 108678965B
- Authority
- CN
- China
- Prior art keywords
- shell
- flange piece
- electric box
- motor
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 23
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- F04D13/0693—Details or arrangements of the wiring
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a shielding variable frequency circulating pump capable of fully radiating, which belongs to the technical field of variable frequency pumps and comprises a pump shell, a motor shell connected with the pump shell and an electric box arranged on the outer side of the motor shell, wherein an electronic circuit board carrying a heating electronic component is arranged in the electric box, the electric box comprises a lower shell close to the motor shell and an upper shell far away from the motor shell, the lower shell is made of a heat-conducting metal material, and a heating part of the heating electronic component is in heat conduction connection with the lower shell. The lower shell of the electric box, which is close to the motor shell, is integrally supported by the metal material, the electric box has good heat conduction performance and large heat dissipation area, heat can be quickly and fully led out after the heating part of the heating electronic component is in heat conduction connection with the electric box, and the circulating pump has a simple integral structure and relatively low manufacturing cost.
Description
Technical Field
The invention relates to the field of variable frequency pumps, in particular to a shielding variable frequency circulating pump capable of fully radiating heat.
Background
The shielding type variable frequency circulating pump in the prior art generally consists of an impeller, a motor, a shielding sleeve and an electric box which can be connected with the motor, wherein an electronic circuit board carrying electronic components is arranged in the electric box and used for controlling the motor. Some of the electronic components are high-power heating devices, and heat accumulation of the heating devices cannot be timely discharged, so that the service life of the electronic circuit board and the product stability are directly affected, and the heat of the electronic components must be discharged out of the electrical box in a proper mode.
Disclosure of Invention
In order to solve the problems, the invention provides a shielding variable frequency circulating pump capable of fully radiating heat, so as to fully radiate the heat by adopting a simple structure.
The technical scheme adopted by the invention is as follows:
the utility model provides a fully radiating shielding variable frequency circulating pump, includes the pump case, connects the motor casing of pump case and sets up in the electrical apparatus box in the motor casing outside, be provided with the electronic circuit board who carries on the electronic component that generates heat in the electrical apparatus box, the electrical apparatus box includes the lower casing that is close to the motor casing and keeps away from the upper casing of motor casing, the lower casing is made and the heating part and the lower casing heat conduction of the electronic component that generates heat are met by the metal material of heat conduction.
As a further improvement of the present invention, the lower housing is integrally formed with heat radiating fins.
As a further improvement of the invention, a boss facing the heating electronic component is arranged at the position of the lower shell corresponding to the heating electronic component, and nonconductive heat-conducting glue is filled between the boss and the heating part of the heating electronic component.
As a further improvement of the invention, the electronic circuit board is fixed with the lower shell, and the upper shell is connected with the lower shell through a hinge structure so as to be openable.
As a further improvement of the invention, one end of the electric box facing the motor shell is provided with a first flange, the corresponding end of the motor shell facing the electric box is provided with a second flange, and the first flange and the second flange are locked through a hoop.
As a further improvement of the invention, the opposite surfaces of the first flange piece and the second flange piece are respectively provided with a shaft and a hole which are mutually inserted along the axial direction.
As a further improvement of the invention, the first flange piece and the second flange piece are separated from each other so as to form a hollow ventilation channel
As a further improvement of the invention, the power module of the winding stator passes through the first flange piece and the second flange piece from the electric box and then reaches the motor shell, and a sealing structure is arranged outside the power module.
As a further improvement of the invention, the sealing structure comprises a hollow convex column arranged on the second flange, the convex column protrudes towards the first flange and penetrates through an axial through hole formed in the first flange, and the power module penetrates through a power module channel formed by the hollow part of the convex column and the axial through hole.
As a further improvement of the invention, the power module comprises a rubber sealing block and a plurality of phosphor copper sheets, one end of each phosphor copper sheet is connected to the electronic circuit board, the other end of each phosphor copper sheet stretches into the motor shell and is connected to the winding stator, the middle part of each phosphor copper sheet is wrapped and fixed by the rubber sealing block, and the rubber sealing block is deformed by the extrusion force of the convex column towards the direction of the first flange sheet to seal and fill the power module channel.
The beneficial effects of the invention are as follows: the lower shell of the electric box, which is close to the motor shell, is integrally supported by the metal material, the electric box has good heat conduction performance and large heat dissipation area, heat can be quickly and fully led out after the heating part of the heating electronic component is in heat conduction connection with the electric box, and the circulating pump has a simple integral structure and relatively low manufacturing cost.
Drawings
The invention will be further described with reference to the drawings and embodiments.
FIG. 1 is a schematic diagram of a circulation pump;
FIG. 2 is a schematic diagram of the assembly of a motor housing with an electrical box;
FIG. 3 is an assembled schematic view of the motor housing and electrical box from another perspective;
FIG. 4 is a schematic view of the upper housing after opening;
FIG. 5 is an exploded view of the lower housing and motor casing;
FIG. 6 is an exploded view of the lower housing from another perspective with the motor housing;
Fig. 7 is an assembled schematic view of a power module.
Detailed Description
The sufficiently heat-radiating canned motor variable frequency circulating pump shown in fig. 1 includes a pump case 100, a motor housing 200 connected to the pump case 100, and an electric box 300 provided outside the motor housing 200. The pump case 100, the motor housing 200, and the electrical box 300 may be disposed in the same axial direction as shown in the drawings, or may be disposed on a radial side of the motor housing, which is not shown. An impeller is provided in the pump housing 100, and a wound stator for driving the impeller to rotate is provided in the motor case 200. An electronic circuit board 1 as shown in fig. 6 is provided in the electrical box 300, and the electronic circuit board 1 is mounted with heat generating electronic components such as various chips, which emit a large amount of heat during the operation of the pump. Referring to fig. 4 to 6, the electrical box 300 includes a lower case 2 close to the motor case 200 and an upper case 3 far from the motor case 200, the upper case 3 and the lower case 2 are locked by screws into an integral case having a cavity therein, and the electronic circuit board 1 and the heat generating electronic components are located in the cavity.
In an embodiment, the upper housing 3 may be made of engineering plastic, and the surface of the upper housing is provided with the function keys 301 and the display screen 302 shown in fig. 2. The lower housing 2 is made of a heat conductive metal material, such as cast iron or aluminum alloy, and the heat generating part of the heat generating electronic component is in heat conductive connection with the lower housing 2, and the heat generating part and the lower housing can generate sufficient heat transfer. Generally, the area of the lower housing 2 exposed to the outside is far larger than the area of the heat dissipation surface of the heat-generating electronic component, so that heat is conducted from a small area to a large area, thereby improving heat dissipation efficiency and reducing heat accumulation. Because the lower housing 2 directly participates in heat dissipation, an additional heat dissipation structure such as a heat sink is not needed, so that the structure of the electrical box 300 is simpler and more reasonable, and the manufacturing is easier. Further, the upper casing 3 of the electrical box 300 generally needs to be disassembled and assembled due to maintenance, if the heat dissipation structure is disposed on the upper casing or the upper casing is designed with a metal heat conducting member, each disassembly and assembly will affect the contact effect of the heating part of the heating electronic element, resulting in increased process steps and inconvenient maintenance, while the disassembly and assembly of the upper casing 3 will not cause any adverse effect on heat dissipation due to the fact that the lower casing 2 is fixed relative to the motor casing 200.
Further preferably, as shown in fig. 1 to 6, the lower case 2 is integrally formed with heat dissipation fins 21, and the heat dissipation fins 21 are surrounded on the annular outer wall of the lower case 2 in a wave-shaped structure, which increases the heat dissipation area, ensures the contact area of the lower case 2 with the external ambient air to achieve rapid and effective heat dissipation, and also plays a role in beautifying the appearance of the lower case 2.
It is further preferable that, in view of the fact that the electronic circuit board 1 needs to be separated from the entirety of the lower case 2 so that each component has a sufficient accommodation position, a boss 22 as shown in fig. 6 is provided at a position of the lower case 2 corresponding to the heat generating electronic component, the boss 22 being protruded toward the heat generating electronic component so that the boss 22 can be brought closer to the heat generating electronic component. In order to ensure the insulating performance of the lower case 2, a non-conductive heat conductive adhesive is filled between the boss 22 and the heat generating portion of the heat generating electronic component.
In the embodiment, 3 or more columns 23 are provided in the lower case 2, the columns 23 extend in a direction facing away from the motor case 200, each column is provided with internal threads, and positions of the columns correspond to positions of through holes in the electronic circuit board 1, which are used for fixing the electronic circuit board 1 with the lower case 2 by external screws. One of the columns is used for grounding, and a metal short-circuit ring which is not shown is arranged at the position of the electronic circuit board 1 corresponding to the through hole of the column, so that the electronic circuit board 1 and the lower shell 2 are reliably grounded.
In a preferred embodiment, referring to fig. 4, the upper housing 3 is openable by connecting the lower housing 2 by a hinge structure 400, which is convenient for wiring and maintenance. When the upper and lower cases 3 and 2 are closed, they are fastened by a plurality of locking screws 500.
Further preferably, the electrical box 300, the motor housing 200 and the pump housing 100 are located in the same axial direction, and the motor housing 200 and the electrical box 300 are fixed by a structure that can be easily disassembled and assembled. Specifically, referring to fig. 5 and 6, a first flange 4 is disposed at an end of the electrical box 300 facing the motor housing 200, a second flange 5 is disposed at a corresponding end of the motor housing 200 facing the electrical box 300, the first flange 4 and the second flange 5 are locked by a hoop 6, and the first flange 4 and the second flange 5 are locked by the hoop 6. In the embodiment, the electric box 300 is locked by the hoop 6 by being connected with the motor shell 200 through the bolts in the prior art, so that the electric box is convenient to disassemble, and the replacement and maintenance efficiency of each part is greatly improved.
Preferably, in order to prevent the selection of the two flange pieces from rotating and to facilitate the accurate positioning of the two flange pieces, a protruding shaft 51 is provided at an angle of 120 degrees on the surface of the second flange piece 5 facing the first flange piece 4, a cross opening, not shown, is provided at the upper part of the shaft 51, a hole 41 is provided at the position of the first flange piece 4 facing the second flange piece 5 corresponding to the shaft, a cross rib, not shown, is provided in the hole 41, the shaft 51 is inserted into the hole 41 to perform positioning and limit the degree of freedom of steering, and the cross rib is used for hard connection to realize grounding. Of course, it is also possible to provide the second flange 5 with a shaft and the first flange 4 with a corresponding hole.
Further preferably, in connection with fig. 7, the first flange piece 4 and the second flange piece 5 are spaced apart from each other without being directly connected together, that is, the flange surface of the first flange piece 4 and the flange surface of the second flange piece 5 are not in direct contact with each other and have the hollow ventilation duct 600, so that heat transfer does not occur even if both are made of metal materials. The space between the two flange plates is connected to isolate the heat generated by the motor and the heat of the electrical box 300 from radiating each other, and the isolated hollow ventilation channel 600 can also be ventilated, so that the heat between the two flange plates can be rapidly cooled and dissipated by external air convection.
Considering that the motor needs to be powered and controlled by leading out a circuit from the electric box 300, the circuit needs to be sealed to prevent moisture from entering, the embodiment sets a power module between the electronic circuit board 1 and the motor, and the power module passes through the first flange plate 4 and the second flange plate 5 from the electric box 300 and then reaches the motor housing 200, and the outside of the power module is provided with a sealing structure.
Further, the above-mentioned sealing structure includes a hollow boss 7 provided on the second flange 5, the boss 7 being protruded toward the first flange 4, the first flange 4 being provided with an axial through hole 8 at a position corresponding to the boss 7, the boss 7 being inserted into the axial through hole 8 and the power module passing through a power module passage 11 constituted by a hollow portion of the boss 7 and the axial through hole 8. The convex column 7 is integrally formed on the second flange 5, the axial through hole 8 is integrally formed on the first flange 4, and the combination of the convex column 7 and the axial through hole 8 plays a role in sealing to a certain extent.
In order to further improve the sealing effect, the power module comprises a rubber sealing block 9 and three phosphor copper sheets 10, and of course, more phosphor copper sheets 10 can be selected according to practical situations. Three phosphor copper sheets 10 are integrally injection-molded into the rubber sealing block 9 by adopting an injection molding process after being arranged in a line according to the arrangement interval of the motor winding stator, the two ends of the injection molding body are exposed, so that the two ends of the phosphor copper sheets 10 are exposed, one end of each phosphor copper sheet 10 is connected to the electronic circuit board 1, and the other end of each phosphor copper sheet extends into the motor shell 200 to be connected with the wiring terminal of the stator. In the embodiment, the phosphor copper sheet 10 is adopted to replace a metal wire in the traditional technology, so that the disassembly and assembly are convenient, and the conductive connection of the motor and the electronic circuit board can be realized by splicing the first flange sheet 4 and the second flange sheet 5 only by properly selecting the positions. The rubber sealing block 9 can not be completely rubber, but only a layer of rubber which has a certain thickness and can be deformed is coated outside the injection molding piece. Referring to fig. 7, an annular step 81 extending toward the axial center direction is provided at the top of the axial through hole 8, an annular wing 91 extending toward the periphery is provided at the top of the rubber sealing block 9, when the first flange 4 and the second flange 5 are subjected to the locking force of the anchor ear 6, the wing 91 is deformed by the extrusion force of the convex column 7 toward the step 81 direction, so that the top end surface of the wing 91 is in sealing connection with the step 81, and the bottom end surface of the wing 91 is in sealing connection with the end surface of the convex column 7, thereby the rubber sealing block 9 is in sealing filling with the whole power module channel 11.
The heat dissipation effect of the circulating pump in the embodiment is greatly improved on the premise of considering the sealing performance.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Claims (1)
1. The utility model provides a fully radiating shielding variable frequency circulating pump, includes pump case (100), connects motor housing (200) and setting up in electrical apparatus box (300) in motor housing (200) outside of pump case (100), be provided with electronic circuit board (1) of carrying heating electronic component in electrical apparatus box (300), its characterized in that: the electric box (300) comprises a lower shell (2) close to the motor shell (200) and an upper shell (3) far away from the motor shell (200), wherein the lower shell (2) is made of a heat-conducting metal material, and a heating part of the heating electronic component is in heat-conducting connection with the lower shell (2);
The lower shell (2) is integrally formed with radiating fins (21);
a boss (22) facing the heating electronic component is arranged at the position of the lower shell (2) corresponding to the heating electronic component, and nonconductive heat-conducting glue is filled between the boss (22) and the heating part of the heating electronic component;
The electronic circuit board (1) is fixed with the lower shell (2), and the upper shell (3) is connected with the lower shell (2) through a hinge structure so as to be openable;
One end of the electric box (300) facing the motor shell (200) is provided with a first flange piece (4), the corresponding end of the motor shell (200) facing the electric box (300) is provided with a second flange piece (5), and the first flange piece (4) and the second flange piece (5) are locked through a hoop (6);
The opposite surfaces of the first flange piece (4) and the second flange piece (5) are respectively provided with a shaft and a hole which are mutually inserted along the axial direction;
The first flange piece (4) and the second flange piece (5) are mutually separated so as to form a hollow ventilation channel;
The power module of the winding stator passes through the first flange piece (4) and the second flange piece (5) from the electric box (300) and then reaches the motor shell (200), and a sealing structure is arranged outside the power module;
The sealing structure comprises a hollow convex column (7) arranged on the second flange piece (5), the convex column (7) protrudes towards the direction of the first flange piece (4) and is inserted into the first flange piece, an axial through hole (8) is formed in the first flange piece (4), and the power module passes through a power module channel (11) formed by the hollow part of the convex column (7) and the axial through hole (8);
The power module comprises a rubber sealing block (9) and a plurality of phosphorus copper sheets (10), one end of each phosphorus copper sheet (10) is connected to the electronic circuit board (1), the other end of each phosphorus copper sheet extends into the motor shell (200) and is connected to the winding stator, the middle part of each phosphorus copper sheet (10) is wrapped and fixed by the rubber sealing block (9), and the rubber sealing block (9) is deformed by extrusion force of the protruding column (7) towards the direction of the first flange sheet (4) to seal and fill the power module channel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638439.5A CN108678965B (en) | 2018-06-20 | 2018-06-20 | Fully radiating shielding variable frequency circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638439.5A CN108678965B (en) | 2018-06-20 | 2018-06-20 | Fully radiating shielding variable frequency circulating pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108678965A CN108678965A (en) | 2018-10-19 |
| CN108678965B true CN108678965B (en) | 2024-06-04 |
Family
ID=63811705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810638439.5A Active CN108678965B (en) | 2018-06-20 | 2018-06-20 | Fully radiating shielding variable frequency circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678965B (en) |
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| WO2013092317A2 (en) * | 2011-12-23 | 2013-06-27 | Grundfos Holding A/S | Electric motor |
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| CN208380886U (en) * | 2018-06-20 | 2019-01-15 | 广州奥姆特机电设备制造有限公司 | A kind of shielding frequency variable circulating pump sufficiently to radiate |
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|---|---|---|---|---|
| JP2013090532A (en) * | 2011-10-21 | 2013-05-13 | Mitsuba Corp | Brushless motor |
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- 2018-06-20 CN CN201810638439.5A patent/CN108678965B/en active Active
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| EP2072828A1 (en) * | 2007-12-17 | 2009-06-24 | Grundfos Management A/S | Wet-running centrifugal pump |
| CN102007672A (en) * | 2008-04-18 | 2011-04-06 | 格伦德福斯管理联合股份公司 | Frequency inverter being mounted on a motor |
| CN103443468A (en) * | 2011-03-12 | 2013-12-11 | 格伦德福斯管理联合股份公司 | Heat circulation pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108678965A (en) | 2018-10-19 |
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