CN203548248U - Alternating-current permanent magnet draining pump - Google Patents
Alternating-current permanent magnet draining pump Download PDFInfo
- Publication number
- CN203548248U CN203548248U CN201320746264.2U CN201320746264U CN203548248U CN 203548248 U CN203548248 U CN 203548248U CN 201320746264 U CN201320746264 U CN 201320746264U CN 203548248 U CN203548248 U CN 203548248U
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- Prior art keywords
- pump housing
- stator iron
- pump
- iron core
- coil
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- Expired - Lifetime
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- 238000001746 injection moulding Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 138
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 31
- 239000004033 plastic Substances 0.000 description 27
- 230000008569 process Effects 0.000 description 20
- 210000004907 gland Anatomy 0.000 description 17
- 239000003570 air Substances 0.000 description 16
- 238000002347 injection Methods 0.000 description 16
- 239000007924 injection Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 238000004806 packaging method and process Methods 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 239000012080 ambient air Substances 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
This utility model discloses an alternating-current permanent magnet draining pump. The draining pump comprises a pump cover, a pump body, a magnetic core, a rotating shaft, a stator core and coil, wherein the coil is wound on a coil framework, the stator core is assembled on the coil, the pump body is a shell which is formed in an integral injection molding mode by surrounding the contour of the assembled coil, the contour of the coil framework and the contour of the stator core, a magnetic core containing space with an opening in the top is defined by the shell, the space extends from the opening to the center of the pump body and is used for containing the magnetic core, the top opening of the magnetic core containing space is provided with a supporting structure used for supporting a bearing of the rotating shaft, the pump body comprises a first pump body part and a second pump body part, a barrel-shaped rotor base used for supporting a rotor assembly is arranged in the second pump body part, and the magnetic core containing space is surrounded by the inner surface of the rotor base; the inward-concave arc part of the stator core is embedded into the rotor base. According to the alternating-current permanent magnet draining pump, the magnetic circuit gap between the stator core and a rotor is reduced, the using efficiency of the product is improved, the structural size of the pump body is reduced, the manufacturing cost of the product is reduced, the pump body is prevented from generating resonant frequency and noise, and heat dissipation performance of the pump is improved.
Description
Technical field
The utility model relates to liquor pump technical field, relates in particular to a kind of AC permanent-magnet draining pump.
Background technique
At present, U-shaped AC permanent magnet synchronous motor is often applied to draining pump, and therefore this draining pump is also often called AC permanent-magnet draining pump.This draining pump is mainly used on washing machine, dishwasher.Because this draining pump has low voltage starting difficulty, thereby limited electromagnetism utilization ratio, made the whole efficiency of product low.On the other hand, in recent years, along with improving constantly of the aggravation of the increasing of manufacturer, market competition, customer requirement, the cost pressure of this product is also constantly highlighting, and Noise and vibration problem also needs continuous improvement.
In operation, between coil and stator iron core, can there is vibration, collide with each other, thereby produce noise in existing U-shaped AC permanent-magnet draining pump.On the other hand, owing to having rotor drum between stator iron core and rotor, the thickness of rotor drum itself and and stator iron core and rotor between desired reasonable clearance all can cause the increase of distance between stator iron core and rotor, increased air gap, affected working efficiency, also increased the size of the pump housing, this is the impact of can not ignore for micropump.
As shown in Figure 1, be the pump shell structure of existing U-shaped AC permanent magnet synchronous motor, this pump comprises a rotor drum 9 ' cylindraceous as seen from the figure, core assembly is positioned over rotor drum inner chamber.Rotor drum is adopted made of plastic conventionally, and thickness reaches 1mm.Due to the existence of rotor drum, increased the air gap between stator iron core and rotor magnetic core.
Fig. 1 a, Fig. 1 b shows the AC permanent-magnet draining pump of available technology adopting, it packs the coil of making 7 ' into plastic package die and carries out injection process to form coil plastic packaging 5 ', the patent No. of coil 7 ' being carried out in process and the Chinese invention patent of injection process is 200710143209.3, denomination of invention is identical for coil being carried out to the process of injection process in the patent of " permanent magnetic synchronization motor for water discharge pump ", forming after coil plastic packaging 5 ', stator iron core 8 ' is assemblied in coil plastic packaging 5 ', then the interior concaved circular cambered surface of the indent circular arc part of stator iron core 8 ' is sleeved on the exterior arc surface of wall of the rotator seat 17 ' of the pump housing 10 ', by buckle 18 ', make coil plastic packaging 5 ' and the pump housing 10 ' be fixed into one.
Above-mentioned AC permanent-magnet draining pump has following shortcoming: first, because stator iron core 8 ' is sleeved on the outer wall of rotator seat 17 ', making between stator iron core 8 ' and magnetic core 15 ' to be separated by by the wall of rotator seat 17 ', (rotator seat 17 ' is due to the requirement of intensity conventionally, its thickness is at least 1mm), therefore increased the inner arc surface of stator iron core 8 ' to the distance (being at least 1.5mm) between the magnetic core 15 ' of rotor, cause magnetic air gap larger, therefore magnetic resistance is larger, and electromagnetic efficiency is lower; The second, between stator iron core 8 ' and rotator seat 17 ', between stator iron core and coil plastic packaging 5 ' and all gapped between coil plastic packaging 5 ' and the pump housing 10 ', while therefore working, can be because vibration produces noise between each component; The 3rd, the heat radiation of stator iron core 8 ' only relies on air radiation and carries out heat conduction to the rotator seat of the pump housing 10 ', and therefore heat dissipation potential is poor.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of AC permanent-magnet draining pump that reduces vibrating noise is provided, it has reduced the magnetic air gap between the magnetic core in stator iron core and rotor assembly, improved the electromagnetic efficiency of product, reduced the physical dimension of the pump housing, reduce the manufacture cost of draining pump, reduced product vibrations and noise and improved heat dispersion.
For realizing above-mentioned purpose of the present utility model, a kind of AC permanent-magnet draining pump that reduces vibrating noise of the present utility model, comprise pump cover, the pump housing, also comprise magnetic core, rotating shaft, stator iron core and coil, coil winding is in coil rack, stator iron core is assemblied in coil, the wherein said pump housing be around assembling after coil, the housing that the profile integrated injection molding of coil rack and stator iron core forms, described housing limits one and is opened on top and from opening, extends to the magnetic core containing space for accommodating magnetic core at pump housing center, the open top of magnetic core containing space is provided with the supporting structure for supporting revolving shaft bearing.
Particularly, comprise the stator module of coil and stator iron core and comprise rotating shaft and the rotor assembly of magnetic core is placed in the pump housing, the pump housing comprises the first pump housing portion of sealed packet contour circle at least and for the second pump housing portion of rotor assembly is installed, and the first pump housing portion and the second pump housing portion connect as one; The cylindrical rotor seat of establishing support rotor assembly in the second pump housing portion, magnetic core containing space is surrounded by the internal surface of rotator seat; The second pump housing portion is provided with the joint for connecting pump cover; The indent circular arc part of stator iron core embeds rotator seat.
Preferably, the first pump housing portion of the pump housing and the second pump housing portion are single injection-molded or secondary injection molding.
Wherein, coil is placed in the first pump housing portion, and the indent circular arc part of stator iron core stretches out in the first pump housing portion.
Wherein, the internal surface of rotator seat is arc-shaped surface, and the interior arc-shaped surface of the indent circular arc part of the stator iron core of this arc-shaped surface and embedding surrounds the magnetic core holding space that holds described magnetic core jointly.
Particularly, the interior arc-shaped surface of the indent circular arc part of stator iron core is configured to a part for the internal surface of described rotator seat.
Particularly, the internal surface that protrudes at least partly described rotator seat to axis direction of the interior arc-shaped surface of stator iron core.
Particularly, in the part of the indent circular arc part of stator iron core, arc-shaped surface and described rotator seat internal surface surround the magnetic core holding space that holds magnetic core jointly.
Particularly, the whole interior arc-shaped surface of the indent circular arc part of stator iron core and the internal surface of described rotator seat surround the magnetic core holding space that holds magnetic core jointly.
Wherein, the part except the interior arc-shaped surface of indent circular arc part of stator iron core is surrounded by described pump housing sealing.
In addition, in the second pump housing portion, be also provided with the waterway that is surrounded on described rotator seat outer wall and an end opening.
Preferably, described stator iron core is through transpassivation and electrophoretic process.
Particularly, one end of described rotator seat sealing is provided with bearing support.
Wherein, described rotor assembly comprises: the rotating shaft that its one end is fixedly connected with the rotating center of described impeller; Be set in the magnetic core in rotating shaft, described magnetic core is placed in the described indent circular arc part of described stator iron core.
In addition, described rotor assembly also comprises the starting mechanism that drives described rotating shaft to rotate with described magnetic core.
Preferably, described starting mechanism is placed in described magnetic core one end away from described impeller.
Or described starting mechanism is placed in described magnetic core one end near described impeller.
Or described starting mechanism is placed in described impeller.
Preferably, between the described indent circular arc part of described magnetic core and described stator iron core, there is running clearance.
Preferably, described running clearance is 0.5mm.
Further, also comprise the gland being arranged between described pump cover and the described pump housing, for opening one end of waterway is sealed.
Particularly, the described pump housing comprises around the coil after assembling and the external frame of stator iron core and the frame being shaped and the inner housing as magnetic core containing space that is positioned at frame lumen centers, described stator iron core is U-shaped stator iron core, its both arms run through inner housing shell wall and are folded in magnetic core both sides, between U-shaped stator iron core both arms and magnetic core, leave running clearance.Owing to separating without rotor drum between U-shaped stator iron core and magnetic core, thereby can the gap between stator iron core and magnetic core be done minimumly.
The described AC permanent-magnet draining pump that reduces vibrating noise also comprises a stainless steel rotor drum, stainless steel rotor drum inner chamber is settled magnetic core, stainless steel rotor drum is placed in described magnetic core containing space, and described stator iron core is U-shaped stator iron core, and its both arms are folded in stainless steel rotor drum both sides.Because stainless thickness can do very thinly, when adopting stainless steel rotor drum, the gap between stator iron core and magnetic core can be done very littlely.
The described pump housing also comprises a waterway for accommodating cooling water, can certainly not want waterway, the external frame at the position of waterway based on U-shaped stator iron core two arms and magnetic core interference and the annulus that is shaped.Waterway is close to outside stator iron core, and the heat that in work, stator iron core produces is reached rapidly to the cooling liquid in waterway, reaches the object of motor radiating cooling, effectively reduces the temperature rise of pump motor.
Described shaft bearing is tightly connected by the supporting structure of bearing sealed ring and shaft bearing.
Described pump cover and the pump housing are assembled together and with the seal ring position that is tightly connected, prevent that the water in pump cover from flowing in the pump housing.
The described pump housing is integrated the housing that forms the bottom lock that is moulded shape.
Described pump housing bottom-open, is sealed and is adopted seal ring sealing to connect by a bonnet.
Compared with prior art, AC permanent-magnet draining pump of the present utility model has advantages of as follows:
1) mode of single injection-molded or secondary injection molding is passed through stator module and rotor assembly in the utility model employing, is placed in the pump housing, has therefore simplified the structure of the pump housing, has reduced the physical dimension of the pump housing, and has been convenient to Product Assembly and maintenance;
2) in the pump housing of the present utility model, the first pump housing portion and the second pump housing portion are formed by utilizing plastic package die to carry out injection process to coil and stator iron core, therefore avoided the pump housing to resonate and reduced noise, and being conducive to stator iron core and dispelling the heat by pump housing heat conduction, having improved radiating efficiency;
3) the utility model is embedded in the rotator seat of the second pump housing portion by the indent circular arc part of stator iron core, make the interior arc-shaped surface of the interior arc-shaped surface of rotator seat and the indent circular arc part of stator iron core jointly surround the inner chamber that holds rotor assembly, therefore reduced the magnetic air gap between stator iron core and the magnetic core of rotor assembly, reduced magnetic resistance, improve electromagnetic efficiency, with respect to the draining pump of existing structure, adopt silicon steel plate, enameled cable and the shorter magnetic core of less amount can reach identical usability, reduced the cost of production of draining pump;
4) the indent circular arc part of stator iron core of the present utility model is embedded in the rotator seat of the second pump housing portion, and therefore stator iron core can contact with the liquid in rotator seat, is beneficial to the heat producing when stator iron core is worked and leaves fast;
5) part except indent circular arc part of stator iron core of the present utility model is surrounded by the first pump housing portion and the second pump housing portion, has therefore avoided the generation of rotator seat water leakage phenomenon;
6) rotator seat of the present utility model is equipped with waterway outward, and the heat that in working procedure, stator iron core produces can be passed to rapidly the liquid in waterway, accelerates stator iron core heat radiation, extends the life-span of draining pump;
7) stator iron core of the present utility model, through transpassivation and electrophoretic process, can effectively prevent that stator iron core from getting rusty, and coil is surrounded by the first pump housing portion, therefore can prevent coil ingress of air.
8) the utility model, integrally formed after the stator iron core, coil rack and the coil plastic packaging that assemble, makes to become non-removable entirety, has reduced the distance between parts, reduced size, and make closely to connect between parts, prevent vibration and generation noise, raising pump performance.
Below in conjunction with accompanying drawing, the utility model is elaborated.
Accompanying drawing explanation
Fig. 1 is the pump shell structure schematic diagram of existing U-shaped AC permanent magnet synchronous motor;
Fig. 1 a is the structural representation in prior art with the AC permanent-magnet draining pump of rotator seat 17 ';
Fig. 1 b is that the E-E shown in Fig. 1 a is to sectional view;
Fig. 2 is the three-dimensional sectional view of the utility model AC permanent-magnet draining pump embodiment 1 internal structure;
Fig. 3 is embodiment's 1 section of structure of the utility model AC permanent-magnet draining pump;
Fig. 3 a is that the M-M of the draining pump of AC permanent-magnet shown in Fig. 3 is to sectional view;
Fig. 4 is the three-dimensional sectional view of embodiment's 2 internal structures of the utility model AC permanent-magnet draining pump;
Fig. 5 is embodiment's 2 structure sectional views of the utility model AC permanent-magnet draining pump;
Fig. 6 be the utility model AC permanent-magnet draining pump embodiment 3 perspective view;
Fig. 7 is the left side view of AC permanent-magnet draining pump shown in Fig. 6;
Fig. 8 is the partial sectional view of AC permanent-magnet draining pump shown in Fig. 6;
Fig. 9 is that the A-A of AC permanent-magnet draining pump shown in Fig. 6 is to sectional view;
Figure 10 is that the B-B of AC permanent-magnet draining pump shown in Fig. 7 is to sectional view;
Figure 11 is the structural representation of rotor assembly of the present utility model;
Figure 12 is the structural representation of the stator iron core in the utility model AC permanent-magnet draining pump;
Figure 13 is the first position relationship schematic diagram between arc-shaped surface in the indent circular arc part of stator iron core in the utility model embodiment 3 and the part of rotator seat;
Figure 14 is the second position relationship schematic diagram between arc-shaped surface in the indent circular arc part of stator iron core in the utility model embodiment 3 and the part of rotator seat.
Description of reference numerals: 1-pump cover; 2-impeller; 3-gland; 3a-gland ring; 4-the second seal ring; 5-bearing sealed ring; 6-the first seal ring; 7-coil; 8-stator iron core; 9-rotor drum; 9.1-stainless steel cylinder; 9.2-rubber plug; The 10-pump housing; 10.1-magnetic core containing space; 10a-first pump housing; 10b-second pump housing; 11-rotating shaft; 12a, 12b-shaft bearing; 13-waterway; 14-bonnet; 15-magnetic core; 16-plastic packaging; 17-rotator seat; Arc-shaped surface in 17a-; 17b-rotator seat gland; 18-joint; 19-bearing support; 20-rotor assembly; 81-indent circular arc part; Arc-shaped surface in 81a-; 82-cantilever arm.
1 '-pump cover; 5 '-coil plastic packaging; 7 '-coil; 8 '-stator iron core; 9 '-rotor drum; 10 '-pump housing; 11 '-rotating shaft; 15 '-magnetic core; 17 '-rotator seat; 18 '-buckle.
Embodiment
As shown in Fig. 2～3, be the AC permanent-magnet draining pump of the utility model cancellation rotor drum, it comprises the pump housing 10, pump cover 1, impeller 2, stator iron core 8, coil 7, magnetic core 15, rotating shaft 11, shaft bearing 12, gland 3.
Core assembly inserts magnetic core containing space 10.1 from pump housing top, and rotating shaft 11 runs through the axis hole of magnetic core 15, from the pump housing, extends to pump cover.Rotating shaft 11 upper ends and impeller 2 are fixedly connected with and impeller 2 is synchronizeed rotation.In this example, magnetic core containing space 10.1 sealed bottoms, along rotating shaft 11 axially opens, connect with stator iron core 8 both arms spaces of living in.The both arms of U-shaped stator iron core 8 are folded in magnetic core both sides from described axially open.Between stator iron core 8 and magnetic core 15, do not need to arrange rotor drum and separate, therefore gap between the two can be very little.
In pump cover 1, be provided with impeller 2, pump cover 1 assembles mutually and forms complete pump case with the pump housing 10.In this example, the pump housing 10 is also provided with waterway 13, and at least part of chamber wall of waterway is around the position of U-shaped stator iron core and magnetic core interference and be shaped, and waterway opening upwards, is sealed by gland 3, is not communicated with magnetic core containing space 10.1.Waterway 13 is close to outside stator iron core 8, and the heat that in work, stator iron core 8 produces is passed to rapidly to the cooling liquid in waterway 13, reaches the object of motor radiating cooling.Certainly, on the pump housing 10, also can adopt the mode of execution that waterway is not set.
Also can perforate on the gland 3 of waterway, as shown in Figure 2, make waterway water can with pump chamber in water flow, when after the ring wear at shaft bearing place, the water of waterway can arrive pump chamber, then enters into magnetic core containing space.Waterway gland can play and prevent that large foreign material from entering into the effect of waterway.
Inner core open top is provided with shaft bearing 12, and shaft bearing 12 is tightly connected by bearing sealed ring 5 and the open top of magnetic core containing space, and bearing sealed ring 5 prevents that water in pump cover is in inflow pump body from here.Rotator seat gland 17b also serves as the bearing bracket of shaft bearing 12 simultaneously.
As shown in Fig. 2,3,3a, the pump housing 10 comprises at least the first 10a of pump housing portion of sealing encirclement stator coil and the second 10b of pump housing portion of arrangement rotor assembly 20, in the second 10b of pump housing portion, be provided with the rotator seat 17 that forms magnetic core containing space 10.1, rotator seat 17 comprises magnetic core 15, rotating shaft 11 for suit and support rotor assembly 20(), be surrounded on the waterway 13 of rotator seat 17 outer walls formation and an end opening.
The pump housing 10 of the present embodiment can adopt single injection-molded method or secondary injection molding method to obtain, below take the method through the secondary injection molding acquisition pump housing 10 as example, when making the pump housing 10, first adopt the first 10a of pump housing portion of the method acquisition pump housing 10 of injection process for the first time, then on the basis of the first 10a of pump housing portion, adopt the method for injection process for the second time to obtain the second 10b of pump housing portion connecting as one with the first 10a of pump housing portion.
Wherein, utilize plastic package die and plastic material to carry out injection process and form the first 10a of pump housing portion prefabricated coil 7, it surrounds coil 7 and seal, make to form in the element of coil 7, except the element of part plug-in type connecting terminal is all isolated completely with ambient air, thereby avoided forming each element ingress of air of coil 7.With the mode of assembling by stator iron core 8(structure as shown in figure 12) a part be arranged on by the first 10a of pump housing portion, surrounded and the coil 7 of sealing in, and the indent circular arc part 81 of stator iron core 8 stretches out in the first 10a of pump housing portion.
Second 10b of pump housing portion of the present embodiment utilizes plastic package die to carry out injection process formation on the basis of the first 10a of pump housing portion, itself and the first 10a of pump housing portion are connected as one, and make the indent circular arc part 81 that stretches out in the stator iron core 8 outside the first 10a of pump housing portion embed the second 10b of pump housing portion, the second 10b of pump housing portion have suit the rotator seat 17 of support rotor assembly be located at outer rim for being connected the joint 18 of pump cover 1.
As shown in Figures 4 and 5, for the AC permanent-magnet draining pump of employing stainless steel rotor drum 9 of the present utility model, it comprises coil 7 after the pump housing 10, pump cover 1, bonnet 14, impeller 2, gland 3, plastic packaging, stator iron core 8, rotor drum 9, rotating shaft 11, shaft bearing 12, magnetic core 15 etc.
In pump cover 1, be provided with impeller 2.The pump housing 10 is shaped around the external frame of coil 7, stator iron core 8, magnetic core 15 after assembling, forms the housing of a upper and lower opening, and its top and pump cover 1 assembly connection with the first seal ring 6 position that is tightly connected are sealed by bonnet 14 bottom it.The pump housing 10 after injection molded comprises around the coil after assembling and the external frame of stator iron core and the frame being shaped and the inner core as magnetic core containing space that is positioned at frame center.Inner core is the non-enclosed space of upper and lower opening, lateral open, connects with stator iron core space of living in.The open top of inner core is provided with the supporting structure for supporting shaft bearing.Rotating shaft 11 runs through the axis hole of magnetic core 15, from the pump housing, extends to pump cover.Rotating shaft upper end and impeller are fixedly connected with and impeller is synchronizeed and rotated.
The rotor drum 9 that is provided with a bottom lock in inner chamber chamber, is mounted with magnetic core 15 in rotor drum.Rotor drum 9 has that length is greater than the stainless steel cylinder 9.1 of described magnetic core height and for sealing the rubber plug 9.2 of stainless steel cylinder 9.1.Rubber plug has for erection in the bearing mounting hole of the rear rotary bearing of rotating shaft bottom, adopts the second seal ring 4 to seal between rubber plug and rotor drum.U-shaped stator iron core 8 both arms penetrate coil 7 and extend to rotor drum 9 both sides, and magnetic core containing space and U-shaped stator iron core both arms space of living in connect mutually.Owing to just separating by very thin stainless steel cylinder 9.1 between stator iron core and magnetic core, greatly reduced gap between the two.
In this example, the pump housing 10 is also provided with waterway 13, and at least part of chamber of waterway wall is around the position of U-shaped stator iron core and magnetic core interference and be shaped, and waterway opening upwards, is sealed by gland 3, is not communicated with magnetic core containing space.Waterway is close to outside stator iron core, and the heat that in work, stator iron core produces is passed to rapidly to the cooling liquid in waterway, reaches the object of motor radiating cooling.Certainly, on the pump housing, also can adopt the mode of execution that waterway is not set.
Inner core is provided with shaft bearing 12 in its open top, and the open top that shaft bearing 12 is put space by bearing sealed ring 5 and inner core is tightly connected.Bearing sealed ring 5 prevents that water in pump cover is in inflow pump body from here.Gland 3 also serves as the bearing bracket of shaft bearing 12 simultaneously.
As shown in Fig. 6,7,8,9,10, there is shown the utility model AC permanent-magnet draining pump embodiment 3 structure.
AC permanent-magnet draining pump of the present utility model comprises: the pump housing 10, the pump cover 1 being connected with the pump housing 10, be placed in impeller 2 in pump cover 1, be placed in rotor assembly and stator module in the pump housing 10, stator module has coil 7 and stator iron core 8, and rotor assembly has magnetic core 15 and rotating shaft 11.
Wherein, the pump housing 10 comprises the first 10a of pump housing portion of sealed packet contour circle 7 at least and for the second 10b of pump housing portion of rotor assembly 20 is installed, and the first 10a of pump housing portion and the second 10b of pump housing portion connect as one.
In the second 10b of pump housing portion, be provided with the rotator seat 17 for suit and support rotor assembly, the indent circular arc part 81 of stator iron core 8 is embedded in rotator seat 17, rotator seat 17 is the tubular of an end opening, make the interior arc-shaped surface 81a of indent circular arc part 81 as a part of rotator seat 17 interior arc-shaped surface 17a, the common formation of interior arc-shaped surface 81a of the interior arc-shaped surface 17a of rotator seat and the indent circular arc part 81 of embedding held inner chamber, be magnetic core containing space 10.1, for being set with and supporting the rotor assembly that comprises magnetic core and rotating shaft.The second 10b of pump housing portion lateral margin forms joint 18, and joint 18 connects pump cover 1.
When the part of stator iron core 8 or whole interior arc-shaped surface 81a are rotator seat 17 interior arc-shaped surface 17a a part of, magnetic air gap between the outer surface of magnetic core 15 and the interior arc-shaped surface 81a of stator iron core 8, equals the distance b (as shown in figure 14) between the outer surface of magnetic core 15 and the interior arc-shaped surface 17a of rotator seat 17; When the interior arc-shaped surface 81a of stator iron core 8 protrudes from the interior arc-shaped surface 17a of rotator seat 17 to axis direction, magnetic air gap a is less than distance b (as shown in figure 13).
It should be noted that, in the part of stator iron core 8, arc-shaped surface 81a is a part of rotator seat 17 interior arc-shaped surface 17a, a part (such as end portion) that refers to interior arc-shaped surface 81a may be sealed by the second pump housing portion, and interior arc-shaped surface 81a remaining part exposes and become a part of rotator seat 17 interior arc-shaped surface 17a.
Like this, just make the gap between the outer surface of magnetic core 15 and the interior arc-shaped surface 81a of stator iron core 8 of rotor assembly greatly reduce, at utmost reduce the magnetic air gap a between the magnetic core 15 in stator iron core 8 and rotor assembly, magnetic resistance is reduced, greatly improved electromagnetic efficiency.
Particularly, because the gap between the interior arc-shaped surface 81a of stator iron core 8 and the outer surface of the magnetic core 15 of rotor assembly is at utmost reduced, effectively improve electromagnetic efficiency, therefore in the case of realizing same starting torque or reaching identical usability, the utility model draining pump is compared the draining pump of existing structure, the silicon steel plate quantity adopting reduces by 1/3, therefore the length of magnetic core reduces 1/3, form the also corresponding minimizing of enameled cable amount of coil, thereby effectively reduce the manufacture cost of draining pump.
As shown in figure 12, stator iron core 8 is U-shaped, and it has a pair of cantilever arm 82 and surrounds with the interior arc-shaped surface of 81, two the indent circular arc part 81 of a concave circular arc part that lay respectively at a pair of cantilever arm 82 one end the cavity that holds magnetic core 15.
When adopting single injection-molded method to make the pump housing 10, utilize plastic package die and plastic material to carry out injection process one time to stator iron core 8 and coil 7, form all-in-one-piece the first 10a of pump housing portion and the second 10b of pump housing portion.Preferably, plastic material is BMC material.
First, adopt skeleton, enameled cable, plug-in type connecting terminal, heat protector and sealing compound paper to make coil 7, and U-shaped stator iron core 8 is adopted to passivation and electrophoretic process; Then, the both arms of stator iron core 8 82 are penetrated to coil 7, what make stator iron core 8 comprises the stretching out outside coil 7 of indent circular arc part 81; Finally, coil 7 and stator iron core 8 are put into plastic package die and carry out injection process one time, form the pump housing 10 that comprises the first pump housing portion and the second pump housing portion that is wrapped in coil 7 and stator iron core 8 outsides.
Wherein, the first 10a of pump housing portion encirclement and encapsulated coil 7 and stator iron core 8 are positioned at the part within coil 7, the element (except the part of plug-in type connecting terminal) that the first pump housing portion surrounds, sealing forms coil 7, itself and ambient air are isolated, and stator iron core 8 is positioned at the part of coil and the end relative with indent circular arc part 81 also surrounded sealing and isolate with ambient air by the first 10a of pump housing portion.
The indent circular arc part 81 of stretching out the stator iron core 8 outside coil 7 embeds in the second 10b of pump housing portion, the rotator seat 17 of the second 10b of pump housing portion is the tubular of an end opening, the common inner chamber that holds rotor assembly that forms of the interior arc-shaped surface of this rotator seat and the interior arc-shaped surface of indent circular arc part 81, and the indent circular arc part 81 axis L(that surround, that rotor assembly can be held to indent cavity wherein of stator iron core 8 is as shown in figure 12) and the center line of the rotator seat 17 of the second pump housing portion coincide.
By making the interior arc-shaped surface 81a of indent circular arc part 81 and the common inner chamber that holds rotor assembly that forms of the interior arc-shaped surface 17a of rotator seat 17 of stator iron core 8, can make the air gap a between magnetic core 15 outer surfaces and the interior arc-shaped surface 81a of stator iron core 8 of rotor assembly at utmost reduce, thereby greatly reduce magnetic resistance, improve electromagnetic efficiency.
When adopting the method for secondary injection molding to manufacture the pump housing 10, first adopt on coil injection moulding for the first time to obtain first 10a of pump housing portion of the pump housing 10 of coil overmold, then stator iron core 8 in the first 10a of pump housing portion assembling, adopts injection moulding for the second time to obtain the second 10b of pump housing portion connecting as one with the first 10a of pump housing portion take the first 10a of pump housing portion and stator iron core 8 as basis.
When adopting the method for secondary injection molding to make the pump housing 10, the first 10a of pump housing portion in the pump housing 10 adopts BMC material, and the second 10b of pump housing portion adopts the thermoplastic material that is easy to moulding, as PP material, but also can adopt BMC material to make.
In the process of the manufacture pump housing 10, no matter be, adopt single injection-molded or the method for secondary injection molding, at least coil overmold 7 of the first 10a of pump housing portion in the pump housing 10, by injection molding forming method, make coil by the sealing that 10a surrounds of the first pump housing portion, like this, make coil 7 and the first 10a of pump housing portion integral, not only reduced product resonance and product noise, and be conducive to heat radiation.
Wherein, the first 10a of pump housing portion can utilize plastic package die and plastic material prefabricated coil 7 is carried out to injection process and form, it surrounds coil 7 and seal, make to form in the element of coil 7, all the other elements except part plug-in type connecting terminal are all isolated completely with ambient air, thereby have avoided the each element that forms coil 7 be isolated from the outside and avoid contacting with air.With the mode of assembling by stator iron core 8 be inserted into by the first 10a of pump housing portion, surrounded and the coil 7 of sealing in, and make the indent circular arc part 81 of stator iron core 8 stretch out in the first 10a of pump housing portion.
Or the first 10a of pump housing portion can also utilize plastic package die and plastic material to be arranged on stator iron core 8 in stator dress circle 7 to prefabricated coil 7 and its part to carry out injection process and form.Wherein, make after coil 7, a part for stator iron core 8 is arranged in coil 7, and the indent circular arc part 81 of a pair of cantilever arm one end of stator iron core 8 is stretched out in outside coil 7, the stator iron core 8 that recycling plastic package die and plastic material are arranged in coil 7 coil 7 and its part carries out injection process, the part being placed in coil 7 of coil 7 and stator iron core 8 is surrounded by the first 10a of pump housing portion, and indent circular arc part 81 on a pair of cantilever arm of stator iron core 8 stretch out in outside the first 10a of pump housing portion.Now, form in the element of coil 7, all the other elements and ambient air except part plug-in type connecting terminal are isolated completely, thereby avoided forming each element ingress of air of coil 7, and stator iron core 8 parts that are arranged in coil 7 are also surrounded and are sealed and isolate completely with ambient air by the first 10a of pump housing portion together with coil 7.
The second 10b of pump housing portion by the basis of the first 10a of pump housing portion that stator iron core 8 and parcel coil 7 are installed, utilize plastic package die to carry out injection process to be formed, itself and the first 10a of pump housing portion connect as one.
The second 10b of pump housing portion is the sealing of the part except the interior arc-shaped surface of indent circular arc part 81 encirclement by stator iron core 8, and the indent circular arc part 81 that makes to stretch out in outside the first 10a of pump housing portion embeds in the second 10b of pump housing portion.The second 10b of pump housing portion has rotator seat 17 and joint 18, and rotator seat 17 is the tubular of an end opening, has inner chamber, and for suit support rotor assembly, joint 18 is positioned at the lateral margin of the second 10b of pump housing portion, for connecting pump cover 1.
The indent circular arc part 81 of stator iron core 8 is embedded in rotator seat 17, and in a part for indent circular arc part 81, arc-shaped surface 81a or all interior arc-shaped surface 81a become a part of rotator seat 17 interior arc-shaped surface 17a, and common formation is held the inner chamber of rotor assembly.The interior arc-shaped surface 17a(that in the part of indent circular arc part 81, arc-shaped surface 81a can protrude from rotator seat 17 towards axis direction is as shown in figure 13), or with the interior arc-shaped surface 17a equal (as shown in figure 14) of rotator seat 17.
One end of sealing at rotator seat 17 is provided with bearing support 19, and rotor assembly inserts in rotator seat 17 from one end of rotator seat 17 openings, makes magnetic core 15 be positioned at the cavity part being surrounded by two arc-shaped surface 81a of the indent circular arc part 81 of stator iron core 8.In addition, between the second pump housing portion 7 and pump cover 1, gland 3 is installed, and for guaranteeing sealability, as shown in Figure 8, between pump cover 1 and gland 3, is mounted with the first seal ring 6, between gland 3 and the pump housing 10, be mounted with gland ring 3a.
The two ends of rotating shaft 11 are separately installed with bearing 2, bearing 12 is connected with gland 3 by rotating shaft sealing circle 5, bearing 12b is bearing in the bearing support 19 of rotator seat 17, bearing 12a forms the support of countershaft 11 together with bearing 12b, thereby avoids rotating shaft to produce in the course of the work radial and axial rocking.
In rotating shaft 11, establish the starting mechanism 21 that drive shaft 11 is rotated with magnetic core 15, its be placed in magnetic core 15 away from one end of impeller 2 or magnetic core 15 near one end of impeller 2, in figure, only illustrate that starting mechanism 21 is placed in magnetic core 15 one end away from impeller 2.
Wherein, magnetic core 15 is placed in the indent circular arc part 81 of stator iron core 8, and has running clearance (being magnetic air gap) between magnetic core 15 outer surfaces and the inner arc surface of indent circular arc part 81.Preferably, described running clearance is 0.5mm.Conventionally, the inner arc surface of indent circular arc part 81 consists of two sections of different arc surfaces of radius, and running clearance refers to the gap (as shown in Figure 13, Figure 14) forming between arc surface that radius is less and the outer surface of magnetic core 15.The interior arc-shaped surface of the indent circular arc part 81 of employing stator iron core 8, as a part for rotator seat 17 interior arc-shaped surface, has reduced the magnetic air gap between magnetic core 15 and stator iron core, thereby reduces magnetic resistance, raising electromagnetic efficiency.
When coil 7 is passed to Ac, coil 7 produces alternating magnetic field by stator iron core 8, drive the magnetic core 15 in rotor assembly to rotate forward or backwards, and magnetic core 15 is set in rotating shaft 11, when magnetic core 15 rotates forward or backwards, by starting mechanism 21 drive shafts 11, rotate, rotating shaft 11 is fixedly mounted on the rotating center of impeller 2, when therefore rotating shaft 11 is rotated, can impeller 2 rotate forward or backwards with it, thereby realize the function of draining.
Although above the utility model is explained in detail; but the utility model is not limited to this; those skilled in the art can modify according to principle of the present utility model; therefore, all various modifications of carrying out according to principle of the present utility model all should be understood to fall into protection domain of the present utility model.
Claims (10)
1. one kind can reduce the AC permanent-magnet draining pump of vibrating noise, comprise pump cover (1), the pump housing (10), also comprise magnetic core (15), rotating shaft (11), stator iron core (8) and coil (7), coil (7) is wound in coil rack, stator iron core (8) is assemblied in coil (7), it is characterized in that:
The described pump housing (10) be around assembling after coil (7), coil rack and stator iron core (8) profile integrated injection molding form housing, described housing limits one and is opened on top and from opening, extends to the magnetic core containing space (10.1) for accommodating magnetic core (15) at pump housing center, and the open top of magnetic core containing space is provided with the supporting structure for supporting revolving shaft bearing.
2. AC permanent-magnet draining pump as claimed in claim 1, is characterized in that:
Comprise the stator module of described coil (7) and stator iron core (8) and comprise described rotating shaft (11) and within the rotor assembly of magnetic core (15) is placed in the described pump housing (10);
The described pump housing (10) comprises the first pump housing portion (10a) of sealed packet contour circle (7) at least and for the second pump housing portion (10b) of rotor assembly is installed, and the first pump housing portion (10a) connects as one with the second pump housing portion (10b);
In described the second pump housing portion (10b), be provided with the cylindrical rotor seat (17) for supporting described rotor assembly, described magnetic core containing space (10.1) is surrounded by the internal surface of described rotator seat (17);
Described the second pump housing portion (10b) is provided with the joint (18) for connecting described pump cover (1);
The indent circular arc part (81) of described stator iron core (8) embeds described rotator seat (17).
3. AC permanent-magnet draining pump according to claim 2, is characterized in that, the first pump housing portion (10a) and second pump housing portion (10b) of the described pump housing (10) are single injection-molded or secondary injection molding.
4. AC permanent-magnet draining pump according to claim 3, is characterized in that, described coil (7) is placed in described the first pump housing portion (10a), and the indent circular arc part (81) of described stator iron core (8) stretches out in the first pump housing portion.
5. AC permanent-magnet draining pump according to claim 2, it is characterized in that, the internal surface of described rotator seat (17) is arc-shaped surface, and the interior arc-shaped surface (81a) of the indent circular arc part (81) of the stator iron core (8) of this arc-shaped surface and embedding surrounds the magnetic core containing space (10.1) that holds described magnetic core jointly.
6. AC permanent-magnet draining pump according to claim 5, is characterized in that, the interior arc-shaped surface of the indent circular arc part (81) of described stator iron core (8) is configured to a part for the internal surface of described rotator seat (17).
7. AC permanent-magnet draining pump according to claim 5, is characterized in that, the internal surface (17a) that protrudes at least partly described rotator seat (17) to axis direction of the interior arc-shaped surface (81a) of described stator iron core (8).
8. AC permanent-magnet draining pump according to claim 5, it is characterized in that, in the part of the indent circular arc part (81) of described stator iron core (8), arc-shaped surface (81a) surrounds with described rotator seat (17) internal surface (17a) the described magnetic core containing space (10.1) that holds magnetic core jointly.
9. AC permanent-magnet draining pump according to claim 5, it is characterized in that, the whole interior arc-shaped surface (81a) of the indent circular arc part (81) of described stator iron core (8) surrounds with the internal surface (17a) of described rotator seat (17) the described magnetic core containing space (10.1) that holds magnetic core jointly.
10. according to the AC permanent-magnet draining pump described in any one in claim 2-8, it is characterized in that, in described the second pump housing portion (10b), be also provided with the waterway (13) that is surrounded on described rotator seat (17) outer wall and an end opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746264.2U CN203548248U (en) | 2012-12-12 | 2013-11-22 | Alternating-current permanent magnet draining pump |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220684710 | 2012-12-12 | ||
| CN201220684710.7 | 2012-12-12 | ||
| CN201320567068.9 | 2013-09-12 | ||
| CN201320567068 | 2013-09-12 | ||
| CN201320746264.2U CN203548248U (en) | 2012-12-12 | 2013-11-22 | Alternating-current permanent magnet draining pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548248U true CN203548248U (en) | 2014-04-16 |
Family
ID=50466372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320746264.2U Expired - Lifetime CN203548248U (en) | 2012-12-12 | 2013-11-22 | Alternating-current permanent magnet draining pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548248U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422470A (en) * | 2015-12-07 | 2016-03-23 | 江门市蓬江区硕泰电器有限公司 | Pipe-free pump |
| EP3176926A4 (en) * | 2014-07-28 | 2018-07-11 | Jangmen Idear Hanyu Electrical Joint-Stock Co. Ltd. | Permanent magnet synchronous electric motor and preparation method therefor |
| CN116792342A (en) * | 2023-08-24 | 2023-09-22 | 广东赛普电器制造有限公司 | Water pump of high-efficient cooling of hydrologic cycle formula |
-
2013
- 2013-11-22 CN CN201320746264.2U patent/CN203548248U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3176926A4 (en) * | 2014-07-28 | 2018-07-11 | Jangmen Idear Hanyu Electrical Joint-Stock Co. Ltd. | Permanent magnet synchronous electric motor and preparation method therefor |
| CN105422470A (en) * | 2015-12-07 | 2016-03-23 | 江门市蓬江区硕泰电器有限公司 | Pipe-free pump |
| CN116792342A (en) * | 2023-08-24 | 2023-09-22 | 广东赛普电器制造有限公司 | Water pump of high-efficient cooling of hydrologic cycle formula |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 529040 No. 336 Qing Lan Road, hi tech Development Zone, Guangdong, Jiangmen Patentee after: HANYU GROUP Co.,Ltd. Address before: 529040 No. 336 Qing Lan Road, hi tech Development Zone, Guangdong, Jiangmen Patentee before: JANGMEN IDEAR HANYU ELECTRICAL JOINT-STOCK Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |