CN104854349B - AC permanent-magnet draining pump - Google Patents

Abstract

A kind of AC permanent-magnet draining pump, including the pump housing（10）, pump cover（1）, impeller（2）, stator assembly and rotor assembly, wherein stator module include stator coil（7）And stator core（8）, rotor assembly include rotating shaft（11）, the magnetic core that is arranged in rotating shaft（15）, the axle sleeve that is fixed in rotating shaft（93a）And located at least one limit rib of axle sleeve outer wall.In the pump housing（10）Interior installation is stator assembly and rotor assembly.The pump housing（10）It is interior to be provided with the rotator seat for being used for supporting rotor assembly（17）, and stator core（8）Indent arc sections insertion rotator seat（17）It is interior.Rotor assembly also includes actuating mechanism, for when magnetic core is rotated drive shaft rotates, it is with being fixedly mounted on the startup set of magnetic core one end（93b）, start set（93b）It is made up of nonmagnetic substance.The advantage of the AC permanent-magnet draining pump is that the magnetic air gap between stator core and magnetic core is small, and product service efficiency is high, and physical dimension is small, and noise is low during work, perfect heat-dissipating, and actuating mechanism staring torque is big, starts steady.

Description

AC permanent-magnet draining pump

Technical field

The present invention relates to liquid pump technical field, more particularly to a kind of AC permanent-magnet draining pump.

Background technology

At present, U-shaped AC permanent magnet synchronous motor is commonly applied to draining pump, therefore this draining pump also tends to referred to as exchange forever Magnetic draining pump.This draining pump is mainly used in washing machine, on dish-washing machine.Because this draining pump has low voltage starting difficulty Feature, so as to limit electromagnetism utilization ratio, makes the whole efficiency of product low.On the other hand, in recent years, with manufacturer Increase, the aggravation of market competition, the continuous improvement of customer requirement, the cost pressure of this product also constantly highlighting, noise with Vibration problem is also required to continuous improvement.

Existing U-shaped AC permanent-magnet draining pump can exist in operation, between coil and stator core to be vibrated, mutually Collision, so as to produce noise.On the other hand, due to there is rotor drum, the thickness of rotor drum in itself between stator core and rotor And required reasonable clearance can cause the increase of distance between stator core and rotor between stator core and rotor, increase Air gap is added, have impact on operating efficiency, also increased the size of the pump housing, this is the influence that can not ignore for micropump.

As shown in figure 1, being the pump shell structure of existing U-shaped AC permanent magnet synchronous motor, the pump includes one as seen from the figure Cylindric rotor drum 9 ', core assembly is positioned over rotor tube inner chamber.Rotor drum generally adopts made of plastic, and thickness reaches 1mm. Due to the presence of rotor drum, the air gap between stator core and rotor magnetic core is added.

Fig. 1 a, Fig. 1 b show the AC permanent-magnet draining pump used in the prior art, and it loads the coil 7 ' made Plastic package die carries out injection process to form coil plastic packaging 5 ', and the process and Chinese invention patent of injection process are carried out to coil 7 ' In Patent No. 200710143209.3, stator coil is entered in the patent of entitled " permanent magnetic synchronization motor for water discharge pump " The process of row injection process is identical, after coil plastic packaging 5 ' is formed, and stator core 8 ' is assemblied in coil plastic packaging 5 ', Ran Houtong Cross the rotator seat 17 ' that the indent arc sections of stator core 8 ' are sleeved on to the pump housing 10 ' by its interior concaved circular cambered surface wall it is cylindrical In cambered surface, and coil plastic packaging 5 ' is set to match somebody with somebody integrator by buckle 18 ' and the pump housing 10 '.

But, above-mentioned AC permanent-magnet draining pump also has the shortcomings that as follows：First, turn because stator core 8 ' is sleeved on On the outer wall of stroma 17 ' so that the wall for having rotator seat 17 ' between stator core 8 ' and magnetic core 15 ' is separated by (usual rotator seat 17 ' Due to the requirement of intensity, its thickness is at least 1mm), therefore the inner arc surface of stator core 8 ' is increased to the magnetic core 15 ' of rotor The distance between (be at least 1.5mm), that is, cause magnetic air gap larger, therefore magnetic resistance is larger, electromagnetic efficiency is relatively low；Second, it is fixed Between sub- iron core 8 ' and rotator seat 17 ', between stator core and coil plastic packaging 5 ' and between coil plastic packaging 5 ' and the pump housing 10 ' all There is gap, therefore during work, noise can be produced due to vibration between each parts；3rd, the radiating of stator core 8 ' is only Rotator seat by air radiation and to the pump housing 10 ' carries out heat transfer, therefore heat-sinking capability is poor.

The content of the invention

It is an object of the invention to overcome above-mentioned the deficiencies in the prior art there is provided a kind of AC permanent-magnet draining pump, It reduces the magnetic air gap between stator core and the magnetic core of rotor assembly, improves the electromagnetic efficiency of product, reduces the knot of the pump housing Structure size, reduces the manufacturing cost of draining pump, reduces vibrations and the noise of product, improves heat dispersion, is opened in addition, improving motor Startup power when dynamic, makes startup steady.

To realize the above-mentioned purpose of the present invention, a kind of AC permanent-magnet draining pump for reducing vibrating noise of the invention, bag Pump cover, the pump housing, in addition to magnetic core, rotating shaft, stator core and coil are included, coil winding is assemblied in coil rack, stator core Coil, wherein shell of the pump housing for the profile integrated injection molding formation of the coil after assembling, coil rack and stator core Body, the housing limits one and is opened on top and the accommodating sky of magnetic core for being used to house magnetic core at pump housing center is extended to from opening Between, the open top of magnetic core accommodation space is provided with the supporting structure for supporting shaft bearing.

Particularly, including the stator module of coil and stator core and turning for magnetic core including rotating shaft, in rotating shaft Sub-component is placed within the pump housing；Rotor assembly also includes being fixed on axle sleeve in rotating shaft and at least one located at axle sleeve outer wall Individual limit rib；Be provided with the rotator seat for being used for supporting the rotor assembly in the pump housing, magnetic core accommodation space by rotator seat inner surface Surround；The indent arc sections insertion rotator seat of stator core) in.

Wherein, the pump housing includes at least the first pump housing portion of sealed stator coil and second for installing rotor assembly Pump housing portion, and the first pump housing portion connects as one with the second pump housing portion.

Wherein, the rotator seat is structure as a whole with second pump housing portion, and the outer rim in second pump housing portion is provided with Connecting portion for connecting the pump cover.

Wherein, the stator coil is placed in first pump housing portion, and the indent arc sections of the stator core are stretched out In the first pump housing portion.

Wherein, the rotator seat is the cylinder of one end open, and the Inner arc surface of cylinder is interior with embedded stator core The Inner arc surface in concave arc portion surrounds the magnetic core receiving space for accommodating magnetic core jointly.

Wherein, the Inner arc surface of the indent arc sections of the stator core is configured to the Inner arc surface of the cylinder A part.

It is preferred that, at least part on the Inner arc surface of the indent arc sections of the stator core protrudes institute to axis direction State the inner surface of rotator seat.

It is preferred that, part Inner arc surface and the rotor base inner surface of the indent arc sections of the stator core are surrounded jointly Accommodate the magnetic core receiving space of the magnetic core.

It is preferred that, the whole Inner arc surface of the indent arc sections of the stator core with enclosing jointly with rotor base inner surface Into the magnetic core receiving space for accommodating the magnetic core.

Particularly, the part in addition to the Inner arc surface of indent arc sections of the stator core is sealed by the pump housing Surround.

Wherein, the rotor assembly also includes：The startup set of described magnetic core one end is fixedly connected with, its inwall is provided with least one Individual startup muscle, the startup muscle is not interfered with the limit rib, and the set that starts is made up of nonmagnetic substance.

Particularly, contacted, started between having between muscle and limit rib by shock reducing structure between the startup muscle and limit rib Gap, when the gap to start, starts muscle and is contacted in contact shock reducing structure and promote maximum idle angular before limit rib to be at least 220 ° so that during startup, startup muscle, which can be turned at least, to be contacted by shock reducing structure after 220 ° and promotes limit rib.

It is preferred that, first pump housing portion and second pump housing portion are single injection-molded or secondary injection molding.

It is preferred that, there is running clearance between the indent arc sections of magnetic core and stator core.

It is preferred that, running clearance is 0.5mm.

In addition, being additionally provided with the waterway for being surrounded on rotator seat outer wall and one end open in the second pump housing portion.

Accordingly, a gland is installed, for the open at one end of waterway to be closed between pump cover and the pump housing.

It is preferred that, stator core is through transpassivation and electrophoretic process.

Particularly, one end of rotator seat closing is provided with bearing block.

Wherein, actuating mechanism is placed in magnetic core one end or magnetic core away from impeller close to one end of impeller.

It is preferred that, actuating mechanism is placed in the one end of magnetic core away from impeller.

It is preferred that, two start muscle the inner chamber for starting set are divided into the first and second regions, first area and are mounted with the The second shock reducing structure is mounted with one shock reducing structure, second area；Starting has anti-interference gap between muscle and limit rib, so as to wherein One starts muscle and can turn over a limit rib in two limit ribs, and another starts muscle and can turned in two limit ribs Another limit rib.

Wherein, start two side walls of muscle has the first concave curved surface, two side wall difference of the limit rib respectively With the second concave curved surface, first concave curved surface and the first concave curved surface are used for and first shock reducing structure and the Two shock reducing structures coordinate.

Wherein, the first concave curved surface is identical with the radius of curvature of the second concave curved surface；Wherein, the first concave curved surface The non-closed space of accommodating first shock reducing structure and the second shock reducing structure is formed between its corresponding second concave curved surface.

Particularly, the first shock reducing structure and the second shock reducing structure are structure identical cylinder or spheroid, and its radius is less than first The radius of curvature of concave curved surface.

Particularly, anti-interference gap is formed between the outer wall of the inwall and limit rib that start muscle.

Particularly, the tubular body outer wall of axle sleeve is less than first, second shock reducing structure with starting the distance between muscle inwall Diameter, and start diameter of the distance less than first, second shock reducing structure of set inwall and limit rib outer wall.

Particularly, two limit ribs are two outwardly portions of the tubular body outer wall for being symmetrically set in axle sleeve.

Particularly, it is to be symmetrically set in the inwall for starting set and radially inwardly projecting two covered along starting that two, which start muscle, Protuberance.

It is preferred that, start set inwall provided with a startup muscle, axle sleeve outer wall provided with limit rib, start muscle with it is spacing Shock reducing structure is mounted with cavity between muscle, starts the gap between muscle and limit rib with anti-interference.

Start and anti-interference gap is formed between muscle inwall and limit rib outer wall.

Particularly, when start form anti-interference gap between muscle inwall and limit rib outer wall when, start muscle and limit rib it Between the cavity that is formed be integrated fan-shaped chamber, shock reducing structure is located in fan-shaped chamber.

Particularly, shock reducing structure is segment, and the outer fan-shaped wall radius of shock reducing structure is more than the inwall radius for starting muscle, damping The interior fan-shaped wall radius of body is less than limit rib exterior radius.

Particularly, the tubular body outer wall of axle sleeve is less than the inside and outside of the first shock reducing structure with starting the distance between muscle inwall The difference of fan-shaped wall radius.

Particularly, the height of startup muscle and shock reducing structure is not more than the height of limit rib.

Particularly, the tubular body outer end of axle sleeve is equipped with outwardly platform, the bottom of platform and the top of limit rib End is connected.

Particularly, limit rib is located at the tubular body outer wall of axle sleeve, and is integrally formed with tubular body, platform.

Particularly, start muscle to be integrally formed with starting set.

Particularly, start set to be made by plastic material.

Particularly, the pump housing include the coil after assembling and stator core outline and the shell body that shapes and Positioned at the inner housing as magnetic core accommodation space of shell body lumen centers, the stator core is U-shaped stator core, its both arms Run through inner housing shell wall and be folded in magnetic core both sides, running clearance is left between U-shaped stator core both arms and magnetic core.Due to U-shaped Separate between stator core and magnetic core without rotor drum, so as to which the gap between stator core and magnetic core is made smaller.

The AC permanent-magnet draining pump for reducing vibrating noise also includes in a stainless steel rotor drum, stainless steel rotor drum Chamber disposes magnetic core, and stainless steel rotor drum is placed in the magnetic core accommodation space, and the stator core is U-shaped stator core, its Both arms are folded in stainless steel rotor drum both sides.Because the thickness of stainless steel can be made very thin, when using stainless steel rotor drum, Gap between stator core and magnetic core thus reduces.

The pump housing also includes a waterway for being used to house cooling water, naturally it is also possible to should not waterway, waterway base The outline at the position interferenceed in U-shaped stator core two-arm with magnetic core and the annulus shaped.Waterway is close to stator Outside iron core, the coolant in waterway is reached rapidly to the heat that stator core in work is produced, reach and motor radiating is cooled Purpose, effectively reduce the temperature rise of pump motor.

The shaft bearing is tightly connected by the supporting structure of bearing sealed ring and shaft bearing.

The pump cover is assembled together with the pump housing and is tightly connected position with sealing ring, prevents the water in pump cover from flowing into the pump housing In.

The pump housing is integrated the housing for forming the bottom lock for being moulded into shape.

The pump housing bottom-open, is closed by a bonnet and uses sealing ring closing connection.

Compared with prior art, AC permanent-magnet draining pump of the invention has the advantages that to protrude as follows：

1) present invention is using the pump housing that will stator assembly and rotor assembly dispose in it, therefore simplifies the structure of the pump housing, The physical dimension of the pump housing is reduced, and is easy to Product Assembly and maintenance；

2) in the pump housing of the invention, the first pump housing portion and the second pump housing portion are to stator coil and stator using plastic package die Iron core carries out injection process and formed, therefore avoids the pump housing and resonate and reduce noise, and is conducive to stator core to pass through pump Body heat conduction is radiated, and improves radiating efficiency；

3) present invention is embedded into the rotator seat in the second pump housing portion by the indent arc sections of stator core, makes the interior of cylinder The Inner arc surface of arc-shaped surface and the indent arc sections of stator core collectively forms the inner chamber for accommodating rotor assembly, stator core It is at least the isolation of 1mm rotator seat without wall thickness between magnetic core, therefore reduces the magnetic of stator core and rotor assembly Magnetic air gap between core, reduces magnetic resistance, electromagnetic efficiency is improved, relative to the draining pump of existing structure, using lesser amount of Silicon steel sheet, enamel-covered wire and shorter magnetic core are that can reach identical performance, reduce the production cost of draining pump；

4) the indent arc sections of stator core of the invention are embedded into the rotator seat in the second pump housing portion, therefore stator core It can contact, quickly be dispersed beneficial to the heat produced when stator core is worked with the liquid in rotator seat；

5) part in addition to indent arc sections of stator core of the invention is by the first pump housing portion and the second pump housing portion Surrounded, therefore avoid the generation of rotator seat drainage；

6) heat that stator core is produced in waterway, the course of work being equipped with outside rotator seat of the invention can pass rapidly To the liquid in waterway, accelerate stator core radiating, extend the life-span of draining pump；

7) stator core of the invention effectively can prevent stator core from getting rusty through transpassivation and electrophoretic process, and stator Coil is surrounded by the first pump housing portion, therefore can prevent stator coil ingress of air；

8) startup set of the invention is made up of nonmagnetic substance, reduces production cost, and start the startup muscle and axle in set Shock reducing structure is mounted between the limit rib of set, starts muscle with being contacted between limit rib by shock reducing structure, therefore stress surface is big, starts muscle Impulsive force to limit rib is small, good damping effect, the work noise of draining pump is small, makes startup more steady, and actuating mechanism makes Use long lifespan；

9) when magnetic core of the invention is rotated, due to starting anti-interference gap between the startup muscle of set and the limit rib of axle sleeve Design, in start-up course, the unloaded rotational travel for starting muscle has reached more than 220 °, even up to 270 °, so that opening Staring torque when motivation structure couples impeller is greatly increased, and is conducive to actuating mechanism to start impeller rotation, is started more steady, rotor Component service life is long；

10) startup set, axle sleeve and the shock reducing structure of actuating mechanism of the invention are placed in one end away from impeller, can make magnetic Core is also adjacent to impeller close to impeller, stator core, optimizes the structure of the pump housing：On the one hand, because actuating mechanism is not arranged in In impeller, not only the length of the blade of impeller can increase, and impeller claps the area increase of water, also allows for installation and the system of impeller Make；On the other hand, because stator core is close to impeller, make the structure of whole pump compact.

The present invention is described in detail below in conjunction with the accompanying drawings.

Brief description of the drawings

Fig. 1 is the pump shell structure schematic diagram of existing U-shaped AC permanent magnet synchronous motor；

Fig. 1 a are the structural representation of the AC permanent-magnet draining pump with rotator seat 17 ' in the prior art；

Fig. 1 b are E-E shown in Fig. 1 a to sectional view；

Fig. 2 is the internal structure three dimensional sectional view of AC permanent-magnet draining pump embodiment 1 of the present invention；

Fig. 3 is the section of structure of embodiment 1 of AC permanent-magnet draining pump of the present invention；

Fig. 3 a are the M-M of AC permanent-magnet draining pump shown in Fig. 3 to sectional view；

Fig. 4 is the internal structure three dimensional sectional view of embodiment 2 of AC permanent-magnet draining pump of the present invention；

Fig. 5 is the structure sectional view of embodiment 2 of AC permanent-magnet draining pump of the present invention；

Fig. 6 is the perspective view of AC permanent-magnet draining pump embodiment 3 of the present invention；

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 the AC permanent-magnet draining pump shown in Fig. 6；

Fig. 9 is the A-A of the AC permanent-magnet draining pump shown in Fig. 6 to sectional view；

Figure 10 is the B-B direction sectional view of the AC permanent-magnet draining pump shown in Fig. 7；

Figure 11 is the structural representation of the rotor assembly of the present invention；

Figure 12 be AC permanent-magnet draining pump of the present invention in stator core structural representation；

Figure 13 be the embodiment of the present invention 3 between the indent arc sections of stator core and the part Inner arc surface of rotator seat The first position relationship schematic diagram；

Figure 14 be the embodiment of the present invention 3 between the indent arc sections of stator core and the part Inner arc surface of rotator seat Second of position relationship schematic diagram；

Figure 15 is the explosive view of the first actuating mechanism of AC permanent-magnet draining pump rotor assemblies of the present invention；

Figure 16 is the sectional view after rotor assembly shown in Figure 15 is assembled；

Figure 17 (a), (b) start the schematic diagram for covering the start-up course that turns clockwise for the present invention；

Figure 18 (a), (b), (c) start the schematic diagram for covering rotate counterclockwise start-up course for the present invention；

Figure 19 is the explosive view of second of actuating mechanism of AC permanent-magnet draining pump rotor assemblies of the present invention；

Figure 20 is the sectional view of actuating mechanism shown in Figure 19；

Figure 21 is structural representation of the magnetic core in idling conditions in actuating mechanism shown in Figure 20；

Figure 22 is the structural representation that actuating mechanism shown in Figure 20 is in counterclockwise movement state.

Description of reference numerals：1- pump covers；2- impellers；3- glands；3a- gland rings；The sealing rings of 4- second；5- bearings are close Seal；The sealing rings of 6- first；7- coils；8- stator cores；9- rotor drums；9.1- stainless steel cylinder；9.2- rubber plug；10- The pump housing；10.1- magnetic core accommodation space；The pump housings of 10a- first；The pump housings of 10b- second；11- rotating shafts；12- shaft bearings；12a、12b- Bearing；13- waterways；14- bonnets；15- magnetic cores；16- plastic packagings；17- rotator seats；17a- Inner arcs surface；17b- rotator seat pressures Lid；18- connecting portions；19- bearing blocks；20- rotor assembly；21- actuating mechanisms；81- indent arc sections；81a- Inner arcs surface； 82- cantilever arms.

93a- axle sleeves；93b- starts set；93c, 93c '-damping body；93a ', 93a "-limit rib；93b ', 93b "-start Muscle；5 '-coil plastic packaging；61 "-rotator seat gland；93d, 93d '-sealing ring；93e- bonnets；93f- lubricates muscle；93a " '-platform； A- first areas；B- second areas.

1 '-pump cover；5 '-coil plastic packaging；7 '-coil；8 '-stator core；9 '-rotor drum；10 '-pump housing；11 '-rotating shaft； 15 '-magnetic core；17 '-rotator seat；18 '-buckle.

Embodiment

Embodiment 1

As shown in figures 2-3, be the present invention cancellation rotor drum AC permanent-magnet draining pump, it include the pump housing 10, pump cover 1, Impeller 2, stator core 8, coil 7, magnetic core 15, rotating shaft 11, shaft bearing 12, gland 3.

Coil 7 is wound on coil rack, and the both arms of U-shaped stator core 8 penetrate coil 7.The coil, bone assembled Together, the pump housing 10 formed after the open-topped pump housing 10 of bottom lock, injection molded is wrapped for frame and stator core integrated injection molding The outline that includes the coil after assembling and stator core and the shell body that shapes and positioned at shell inner cavity center as magnetic The inner cylinder of core accommodation space.The both arms of U-shaped stator core protrude from inner cylinder inwall.Inner cylinder is opened at the top of the pump housing, and it is open It is provided with the supporting structure for supporting shaft bearing.

Core assembly is at the top of the pump housing in insertion magnetic core accommodation space 10.1, and rotating shaft 11 runs through the axis hole of magnetic core 15, from pump Body extends to pump cover.The upper end of rotating shaft 11 is fixedly connected and the synchronous axial system of impeller 2 with impeller 2.In this example, the accommodating sky of magnetic core Between 10.1 sealed bottoms, along the axially open of rotating shaft 11, with space insertion residing for the both arms of stator core 8.Pair of U-shaped stator core 8 Arm is folded in magnetic core both sides from the axially open.Rotor drum need not be set to separate between stator core 8 and magnetic core 15, therefore Gap between the two can be with very little.

Impeller 2 is provided with pump cover 1, pump cover 1 is assembled to form mutually complete pump case with the pump housing 10.In this example, the pump housing 10 are additionally provided with waterway 13, at least part cavity wall of waterway around the position that U-shaped stator core is interferenceed with magnetic core and Shaping, waterway opening upwards are sealed by gland 3, not connected with magnetic core accommodation space 10.1.Waterway 13 is close to stator Outside iron core 8, the heat that stator core in work 8 is produced is transferred to rapidly the coolant in waterway 13, reaches motor radiating The purpose of cooling.Certainly, also can be using the embodiment for being not provided with waterway on the pump housing 10.

On the gland 3 of waterway also can perforate, as shown in Fig. 2 flow the water in the water and pump chamber of waterway, when After ring wear at shaft bearing, the water of waterway can arrive pump chamber, enter back into magnetic core accommodation space.Waterway gland It can play a part of preventing big debris from entering waterway.

Inner cylinder open top is provided with shaft bearing 12, and shaft bearing 12 passes through bearing sealed ring 5 and magnetic core accommodation space Open top be tightly connected, bearing sealed ring 5 prevents water in pump cover via flowing into the pump housing herein.Rotator seat gland 17b The support of bearing of shaft bearing 12 is also functioned as simultaneously.

The connection position of pump cover 1 and the pump housing 10 is provided with the first sealing ring 6, to prevent the pump chamber leak of impeller work.

As shown in Fig. 2,3,3a, the pump housing 10 includes at least the first pump housing portion 10a of sealing encirclement stator coil and placement and turned Provided with the rotator seat 17 for forming magnetic core accommodation space 10.1 in second pump housing portion 10b of sub-component 20, the second pump housing portion 10b, turn Stroma 17 is used to being set with and supporting rotor assembly 20 (including magnetic core 15, rotating shaft 11), is surrounded on the formation of the outer wall of rotator seat 17 and one The waterway 13 of end opening.

The pump housing 10 of the present embodiment can be obtained using single injection-molded method or secondary injection molding method, below with Exemplified by the method that the pump housing 10 is obtained by secondary injection molding, when making the pump housing 10, first using first time injection process Method obtains the first pump housing portion 10a of the pump housing 10, then using second injection process on the basis of the first pump housing portion 10a Method obtains the second pump housing portion 10b connected as one with the first pump housing portion 10a.

Wherein, injection process is carried out to prefabricated coil 7 using plastic package die and plastic material and forms first pump housing Portion 10a, coil 7 is surrounded and sealed by it so that in the element for constituting coil 7, except the element of part plug-in type connecting terminal It is all completely isolated with outside air, so as to avoid each element ingress of air for constituting coil 7.With the mode of assembling by stator iron A part for core 8 (structure is as shown in figure 12) is arranged on is surrounded and sealedly in coil 7, and stator by the first pump housing portion 10a The indent arc sections 81 of iron core 8 stretch out in the first pump housing portion 10a.

Second pump housing portion 10b of the present embodiment is carried out at injection on the basis of the first pump housing portion 10a using plastic package die Reason is formed, and it is connected as one with the first pump housing portion 10a, and the stator core 8 for making to stretch out in outside the first pump housing portion 10a Indent arc sections 81 are embedded in the second pump housing portion 10b, and the second pump housing portion 10b has the He of rotator seat 17 for being set with and supporting rotor assembly Located at the connecting portion 18 for being used to connect pump cover 1 of outer rim.

The one end open of waterway 13 of the present embodiment, for containing coolant, and openend and the rotator seat of waterway 13 17 openends are located at homonymy.Correspondingly, the opening for being used for covering waterway 13 is provided between the pump housing portion 10b of pump cover 1 and second There is hole on the gland 3 at end, gland, communicate waterway and pump chamber.Being provided between rotator seat 17 and pump cover 1 is used for rotor The sealed rotator seat gland 17b of open at one end of seat 17.Because the indent arc sections 81 of stator core 8 are embedded in rotator seat 17, And waterway 13 is located on the outer wall of rotator seat 17, therefore the heat that stator core 8 is produced at work can be passed to rapidly Coolant in waterway 13, so that reaching makes the purpose of draining pump radiating and cooling.

Embodiment 2

As shown in Figures 4 and 5, it is the AC permanent-magnet draining pump of use stainless steel rotor drum 9 of the invention, it includes the pump housing Coil 7 10th, after pump cover 1, bonnet 14, impeller 2, gland 3, plastic packaging, stator core 8, rotor drum 9, rotating shaft 11, rotating shaft hold 12, Magnetic core 15 etc..

Impeller 2 is provided with pump cover 1.The pump housing 10 around assembling after coil 7, stator core 8, magnetic core 15 outline into Shape, the housing of one upper and lower opening of formation, its top and the assembly connection of pump cover 1 are simultaneously tightly connected position with the first sealing ring 6, its bottom Closed by bonnet 14 in portion.The pump housing 10 after injection molded includes the coil after assembling and the outline of stator core is formed The shell body of shape and the inner cylinder as magnetic core accommodation space positioned at shell body center.Inner cylinder is upper and lower opening, lateral open Non- enclosed space, with space insertion residing for stator core.The open top of inner cylinder is provided with the supporting for supporting shaft bearing Structure.Rotating shaft 11 runs through the axis hole of magnetic core 15, and pump cover is extended to from the pump housing.Rotating shaft upper end is fixedly connected and impeller with impeller Synchronous axial system.

Inner chamber intracavitary is provided with the rotor drum 9 of a bottom lock, rotor drum and is mounted with magnetic core 15.Rotor drum 9 has length Rubber plug 9.2 of the degree more than the stainless steel cylinder 9.1 of the magnetic core height and for closing stainless steel cylinder 9.1.Rubber is blocked up Head has the bearing mounting hole for being used for assembling the rear rolling bearing for being installed on rotating shaft bottom, is used between rubber plug and rotor drum Second sealing ring 4 is sealed.The U-shaped both arms of stator core 8 penetrate coil 7 and extend to the both sides of rotor drum 9, magnetic core accommodation space and U Space residing for type stator core both arms is mutually communicated.Due between stator core and magnetic core simply by very thin stainless steel cylinder 9.1 separate, and substantially reduce gap between the two.

In this example, the pump housing 10 is additionally provided with waterway 13, waterway at least part cavity wall around U-shaped stator core with The position of magnetic core interference and shape, waterway opening upwards, sealed, do not connected with magnetic core accommodation space by gland 3.Water cooling Chamber is close to outside stator core, and the heat that stator core in work is produced is transferred to rapidly the coolant in waterway, reaches The purpose cooled to motor radiating.Certainly, also can be using the embodiment for being not provided with waterway on the pump housing.

Inner cylinder is provided with rotating shaft in its open top and holds 12, rotating shaft hold 12 be empty by bearing sealed ring 5 and inner cylinder between Open top is tightly connected.Bearing sealed ring 5 prevents the water in pump cover via in the inflow pump housing herein.Gland 3 is also functioned as simultaneously 12 support of bearing is held in rotating shaft.

The connection position of pump cover 1 and the pump housing 10 is provided with the first sealing ring 6, to prevent from entering in the pump housing water, or prevents impeller work The pump chamber leak of work.

Embodiment 3

The structure of AC permanent-magnet draining pump embodiment 3 of the present invention is shown as shown in Fig. 6,7,8,9,10, in figure.

The AC permanent-magnet draining pump of the present invention includes：The pump housing 10, the pump cover 1 being connected with the pump housing 10, it is placed in pump cover 1 Impeller 2, the rotor assembly and stator module being placed in the pump housing 10, stator module have coil 7 and stator core 8, rotor set Part has magnetic core 15 and rotating shaft 11.

Wherein, the pump housing 10 includes at least the first pump housing portion 10a of sealed bundle contour circle 7 and for installing rotor assembly 20 Second pump housing portion 10b, and the first pump housing portion 10a and the second pump housing portion 10b connects as one.

The rotator seat 17 for being used for being set with and support rotor assembly, the indent circle of stator core 8 are provided with second pump housing portion 10b Arc portion 81 is embedded in rotator seat 17, and rotator seat 17 is the tubular of one end open so that the Inner arc surface 81a of indent arc sections 81 As the Inner arc surface 17a of rotator seat 17 part, the Inner arc surface 17a of rotator seat and embedded indent arc sections 81 Inner arc surface 81a is collectively forming receiving inner chamber, i.e. magnetic core accommodation space 10.1, for being set with and supporting including magnetic core and rotating shaft Rotor assembly.Second pump housing portion 10b lateral margins forms connecting portion 18, the connection pump cover 1 of connecting portion 18.

When the part that the part of stator core 8 or whole Inner arc surface 81a are the Inner arc surface 17a of rotator seat 17 When, the magnetic air gap between the outer surface of magnetic core 15 and the Inner arc surface 81a of stator core 8, equal to the outer surface of magnetic core 15 With the distance between the Inner arc surface 17a of rotator seat 17 b (as shown in figure 14)；When stator core 8 Inner arc surface 81a to When axis direction protrudes from the Inner arc surface 17a of rotator seat 17, magnetic air gap is less than apart from b (as shown in figure 13).

It should be noted that the part Inner arc surface 81a of stator core 8 is the one of the Inner arc surface 17a of rotator seat 17 Part, referring to an Inner arc surface 81a part (such as end section) may be closed by the second pump housing portion, and Inner arc table Face 81a remainders expose and become the Inner arc surface 17a of rotator seat 17 part.

So, between allowing between the outer surface of the magnetic core 15 of rotor assembly and the Inner arc surface 81a of stator core 8 Gap is greatly reduced, i.e., at utmost reduce the magnetic air gap between the magnetic core 15 in stator core 8 and rotor assembly so that magnetic Resistance reduces, and substantially increases electromagnetic efficiency.

Especially since stator core 8 Inner arc surface 81a and rotor assembly magnetic core 15 outer surface between Gap is at utmost reduced, and effectively improves electromagnetic efficiency, therefore is being realized same staring torque or reached identical usability In the case of energy, draining pump of the present invention compares the draining pump of existing structure, the silicon steel sheet quantity reduction by 1/3 of use, therefore magnetic core Length reduce 1/3, constitute coil enamel-covered wire amount also accordingly reduce, so as to effectively reduce the manufacturing cost of draining pump.

As shown in figure 12, stator core 8 is U-shaped, and it has a pair of cantilever arms 82 and is located at a pair of cantilever arms 82 1 respectively The one concave arc sections 81 at end, the Inner arc surface 81a of two indent arc sections 81 surrounds the cavity for accommodating magnetic core 15.

When the pump housing 10 is made using single injection-molded method, using plastic package die and plastic material to stator core 8 An injection process is carried out with coil 7, the first pump housing portion 10a and the second pump housing portion 10b of one is formed.It is preferred that, plastic cement material Expect for BMC.

First, coil 7 is made using skeleton, enamel-covered wire, plug-in type connecting terminal, thermal protector and insulating cement paper, and by U The stator core 8 of type is using passivation and electrophoretic process；Then, the both arms 82 of stator core 8 are penetrated into coil 7, makes stator iron The stretching comprising indent arc sections 81 of core 8 is outside coil 7；Finally, coil 7 and stator core 8 are put into plastic package die to enter Injection process of row, forms the pump including the first pump housing portion and the second pump housing portion for being wrapped in coil 7 and the outside of stator core 8 Body 10.

Wherein, the first pump housing portion 10a is surrounded and encapsulated coil 7 and stator core 8 are located at part within coil 7, i.e., and the One pump housing portion is surrounded, sealing constitutes the element (except the part of plug-in type connecting terminal) of coil 7, make its with outside air every From the part and the end relative with indent arc sections 81 that stator core 8 is located in coil are also surrounded by the first pump housing portion 10a Seal and isolate with outside air.

The indent arc sections 81 for stretching out the stator core 8 outside coil 7 are embedded in the second pump housing portion 10b, the second pump housing portion 10b rotator seat 17 is the tubular of one end open, the Inner arc surface of the rotator seat and the Inner arc surface of indent arc sections 81 Be collectively forming accommodate rotor assembly inner chamber, also, stator core 8 indent arc sections 81 surrounded, can be by rotor assembly The center line for accommodating the axis L (as shown in figure 12) of indent cavity therein and the rotator seat 17 in the second pump housing portion coincides.

It is total to by the Inner arc surface 81a and the Inner arc surface 17a of rotator seat 17 of the indent arc sections 81 for making stator core 8 With the inner chamber for forming receiving rotor assembly, the outer surface of magnetic core 15 of rotor assembly and the Inner arc surface 81a of stator core 8 can be made Between air gap a at utmost reduce so that greatly reduce magnetic resistance, improve electromagnetic efficiency.

When manufacturing the pump housing 10 using the method for secondary injection molding, use be molded to obtain for the first time on coil first First pump housing portion 10a of the pump housing 10 of coil overmold, the then stator core 8 in the 10a assemblings of the first pump housing portion, with first pump housing The second pump housing portion connected as one with the first pump housing portion 10a is obtained using second of injection based on portion 10a and stator core 8 10b。

When the pump housing 10 is made using the method for secondary injection molding, the first pump housing portion 10a in the pump housing 10 uses BMC materials Material, the second pump housing portion 10b can be also made using the thermoplastic for being easy to shaping, such as PP materials using BMC.

During the pump housing 10 is manufactured, whether using the method for single injection-molded or secondary injection molding, pump The first pump housing portion 10a at least coil overmolds 7 in body 10, i.e., make coil by the first 10a institutes of pump housing portion by injection molding forming method Sealing is surrounded, so so that the pump housing portion 10a of coil 7 and first is integral, not only reduce product resonance and product noise, and And be conducive to radiating.

Wherein, the first pump housing portion 10a can be carried out at injection using plastic package die and plastic material to prefabricated coil 7 Manage and formed, coil 7 is surrounded and sealed by it so that in the element for constituting coil 7, in addition to the plug-in type connecting terminal of part Remaining element it is all completely isolated with outside air so that avoid constitute coil 7 each element be isolated from the outside and avoid with Air contact.Stator core 8 is inserted into the mode of assembling and surrounded and in sealed coil 7 by the first pump housing portion 10a, and The indent arc sections 81 of stator core 8 are made to stretch out in the first pump housing portion 10a.

Or, the first pump housing portion 10a can also be using plastic package die and plastic material to prefabricated coil 7 and one portion Divide the stator core 8 being arranged in stator dress circle 7 to carry out injection process to be formed.Wherein, make after coil 7, by stator iron A part for core 8 is arranged in coil 7, and the indent arc sections 81 of a pair of cantilever arm one end of stator core 8 are stretched out in Outside coil 7, the stator core 8 for recycling plastic package die and plastic material to be arranged in coil 7 coil 7 and one part is carried out Injection process so that the part being placed in coil 7 of coil 7 and stator core 8 is surrounded by the first pump housing portion 10a, and Indent arc sections 81 on a pair of cantilever arms of stator core 8 are stretched out in outside the first pump housing portion 10a.Now, coil 7 is constituted In element, remaining element and outside air in addition to the plug-in type connecting terminal of part are completely isolated, so as to avoid composition Each element ingress of air of coil 7, also, the part of stator core 8 being arranged in coil 7 is also together with coil 7 by the first pump Body portion 10a is surrounded and sealed and completely isolated with outside air.

Second pump housing portion 10b is on the basis of the first pump housing portion 10a of stator core 8 and parcel coil 7 is provided with, profit Injection process is carried out with plastic package die to be formed, it is connected as one with the first pump housing portion 10a.

Part of the stator core 8 in addition to the Inner arc surface of indent arc sections 81 is sealed and surrounded by the second pump housing portion 10b, Make to stretch out in the indent arc sections 81 outside the first pump housing portion 10a to be embedded in the second pump housing portion 10b.Second pump housing portion 10b has Rotator seat 17 and connecting portion 18, rotator seat 17 are the tubular of one end open, with inner chamber, for being set with and supporting rotor assembly, Connecting portion 18 is located at the second pump housing portion 10b lateral margin, for connecting pump cover 1.

The indent arc sections 81 of stator core 8 are embedded into rotator seat 17, a part of Inner arc table of indent arc sections 81 Face 81a or whole Inner arcs surface 81a turns into the Inner arc surface 17a of rotator seat 17 part, collectively forms receiving rotor set The inner chamber of part.A part of Inner arc surface 81a of indent arc sections 81 can protrude from the inner circle of rotator seat 17 towards axis direction Arc surface 17a (as shown in figure 13), or it is equal (as shown in figure 14) with the Inner arc surface 17a of rotator seat 17.

The one end closed in rotator seat 17 is provided with bearing block 19, and rotor assembly inserts rotor from one end that rotator seat 17 is open In seat 17, magnetic core 15 is set to be located at the cavity portion surrounded by two Inner arc surface 81a of the indent arc sections 81 of stator core 8 Point.In addition, gland 3 is installed between second pump housing portion 7 and pump cover 1, and to ensure sealing property, as shown in figure 8, in pump cover 1 The first sealing ring 6 is mounted between gland 3, gland ring 3a is mounted between gland 3 and the pump housing 10.

The two ends of rotating shaft 11 are separately installed with bearing, and bearing 12a is connected by rotating shaft sealing circle 5 with gland 3, bearing 12b It is supported in the bearing block 19 of rotator seat 17, bearing 12a and bearing 12b form the support of countershaft 11 together, so as to avoid turning Axle produces radial and axial rock in the course of the work.

The actuating mechanism 21 that drive shaft 11 is rotated with magnetic core 15 is set in rotating shaft 11, it is placed in magnetic core 15 away from impeller 2 One end or magnetic core 15 only show that actuating mechanism 21 is placed in one of magnetic core 15 away from impeller 2 in one end of impeller 2, figure End.

Wherein, magnetic core 15 is placed in the indent arc sections 81 of stator core 8, and the outer surface of magnetic core 15 and indent arc sections There is running clearance (i.e. magnetic air gap) between 81 inner arc surface.It is preferred that, the running clearance is 0.5mm.Generally, indent The inner arc surface of arc sections 81 is made up of two sections of different arc surfaces of radius, running clearance refer to the less arc surface of radius with The gap formed between the outer surface of magnetic core 15 (as shown in Figure 13, Figure 14).Using in the indent arc sections 81 of stator core 8 Arc-shaped surface reduces the magnetic air gap between magnetic core 15 and stator core as the part on the Inner arc surface of rotator seat 17, So as to reduce magnetic resistance, improve electromagnetic efficiency.

When coil 7 is passed to alternating current, coil 7 produces alternating magnetic field by stator core 8, drives in rotor assembly Magnetic core 15 is rotated forward or backwards, and magnetic core 15 is set in rotating shaft 11, when magnetic core 15 is rotated forward or backwards, passes through actuating mechanism 21 drive shafts 11 are rotated, and rotating shaft 11 is fixedly mounted on the pivot of impeller 2, therefore can impeller 2 during the rotation of rotating shaft 11 Rotated forward or backwards with it, so as to realize the function of draining.

As shown in Figure 15,19, the actuating mechanism of the present embodiment includes：The startup set 93b of the one end of magnetic core 15 is fixedly mounted on, Start set 93b to be made up of nonmagnetic substance, so as to save the production cost of magnetic core；The axle sleeve 93a in rotating shaft 11 is fixedly mounted on, It is placed in startup set 93b；Also, contacted between startup set 93b and axle sleeve 93a by shock reducing structure.

As shown in Figure 16,20, axle sleeve 93a is placed in startup set 93b, and its outer wall is provided with limit rib 93a ', 93a "；Opening Dynamic set 93b inwalls are provided with startup muscle 93b ', 93b "；Start between muscle and limit rib by shock reducing structure 93c, 93c ' contact.Due to Start the gap that anti-interference is formed between muscle and limit rib (as shown in Figure 18 (b), 21) so that during startup, start muscle and passing through Shock reducing structure promotes the maximum angle for the idle running that can be obtained before limit rib to be at least 220 °.

If specifically, rotor assembly 20 is using the first actuating mechanism as shown in Figure 15-Figure 18, when it starts, starting The maximum angle for the idle running that muscle can be obtained before limit rib is promoted by shock reducing structure is at least 220 °, so that axle sleeve 93a and the rotating shaft 11 being fixedly connected with axle sleeve 93a are rotated, and then drive the impeller 2 being fixedly connected with rotating shaft 11 to rotate.

Wherein, as shown in Figure 15,16, the startup set 93b inwalls of the first actuating mechanism provided with two start muscle 93b ', 93b ", axle sleeve 93a outer wall are provided with two limit rib 93a ' 93a " (being shown in Figure 16)；Start muscle 93b ' and limit rib 93a ' it Between the first shock reducing structure 93c is housed, equipped with the second shock reducing structure 93c ' between muscle 93b " and limit rib 93a " is started；Also, start Muscle 93b ' and start muscle 93b " the off-axis heart of end face distance be more than limit rib 93a ' and the off-axis heart of limit rib 93a " end faces away from From so that, start muscle 93b ' and limit rib 93a ' between, start muscle 93b ' and limit rib 93a " between, startup muscle 93b " and Between limit rib 93a ', between startup muscle 93b " and limit rib 93a ", it can radially be formed between certain interval, i.e. anti-interference Gap.The effect in the anti-interference gap is, if stop without the first shock reducing structure 93c or the second shock reducing structure, start muscle 93b ' or Starting muscle 93b " can rotate by limit rib 93a ' or limit rib 93a " respectively.

As shown in Figure 17 (a), (b), when startup set 93b starts clockwise, starting muscle 93b ' can be along clockwise direction Rotate, limit rib 93a ' side is contacted eventually through the first shock reducing structure 93c；And start muscle 93b " and also turn along clockwise direction It is dynamic, limit rib 93a " side is contacted eventually through the second shock reducing structure 93c '.So, start if the output torque of motor is less than Torque, in the presence of alternating magnetic field, due to starting muscle 93b ', 93b " resistance of start than larger, it can be along shown in Figure 18 Rotate in an anti-clockwise direction, with propeller shaft sleeve 93a rotate counterclockwises.Illustrate subsequent process referring to Figure 18.

As shown in figure 18, first, start set 93b and Figure 18 (a) is turned to as the position shown in Figure 17 (b) in the counterclockwise direction Position, then, there is anti-interference gap due to starting between muscle 93b ' and limit rib 93a ", therefore, startup muscle 93b ' can edge Counterclockwise turn over limit rib 93a " (see Figure 18 (b) Suo Shi) without let or hindrance, and start muscle 93b " and limit rib 93a ' it Between also have an anti-interference gap, therefore start muscle 93b " and can also turn over limit rib 93a ' in the counterclockwise direction；Finally, muscle 93b ' is started Limit rib 93a ' opposite side is contacted by the second shock reducing structure 93c ', and starts muscle 93b " and limit is contacted by the first shock reducing structure 93c Position muscle 93a " opposite side, reaches the position as shown in Figure 18 (c).So, starting set 93b just drives axle sleeve 93a to revolve counterclockwise Turn, so that the impeller of drive shaft 11 is rotated counterclockwise.

According to the process shown in Figure 18 (a)-(c) so that start muscle 93b ' and start muscle 93b " by Figure 17 (b) position turn Figure 18 (c) position is moved, rotational travel can reach 220 °, therefore the staring torque produced is substantially increased, and is conducive to starter motor Structure starts impeller rotation.

In addition, as shown in figure 15, bonnet 93e is provided with the one end of magnetic core 15 away from impeller 2, in axle sleeve 93a and bonnet Sealing ring 93d, 93d are mounted with respectively between 93e, between startup set 93b and axle sleeve 93a '.

When stator coil 7 is passed to alternating current, the alternating magnetic field that stator coil 7 is produced drives magnetic by stator core 8 Core 15 is rotated, and is started set 93b and is rotated with magnetic core 15, and the second shock reducing structure 93c ' can be passed through by starting set 93b startup muscle 93b ' (shown in such as Figure 18 (c)) is contacted with axle sleeve 93a limit rib 93a ', the startup muscle 93b " for starting set 93b inwalls subtracts by first Shake body 93c contacts (shown in such as Figure 18 (c)) with axle sleeve 93a limit rib 93a ", so as to pass through limit rib 93a ', 93a " drive shafts Cover 93a to rotate, because axle sleeve 93a is fixedly connected with rotating shaft 11, therefore rotating shaft 11 is rotated accordingly, drive is fixed on rotating shaft The impeller 2 of 11 one end is rotated, so that AC permanent-magnet draining pump realizes drain function by impeller.

Specifically, it is for inserts, using the method for injection process plastic material to be fixed on into magnetic with magnetic core 15 to start set 93b Formed by one end of core 15, starting set 93b has the accommodating cavity for being used for disposing axle sleeve 93a, symmetrical in the inwall for starting set 93b Provided with the startup muscle 93b ' protruded towards its axis direction, start muscle 93b ", and start muscle 93b ', start two of muscle 93b " Side wall has the first concave curved surface respectively.

Axle sleeve 93a has tubular body and limit rib 93a ', 93a ", and limit rib 93a ' and limit rib 93a " are to be symmetrically set in Two outwardly portions of tubular body outer wall, and limit rib 93a ' and limit rib 93a " two side walls respectively have second in Concave arc surface.It is preferred that, the radius of curvature and startup muscle 93b ' of the second concave curved surface, the first indent arc for starting muscle 93b " The radius of curvature in face is identical.

It is preferred that, limit rib 93a ', 93a " exterior radius are slightly less than startup muscle 93b ', 93b " inwall radius, therefore Anti-interference gap is formed between limit rib 93a ', 93a " outer wall and startup muscle 93b ', 93b " inwall so that limit rib 93a ', 93a " and startup muscle 93b ', 93b " can be rotated against and will not piled up.

As shown in Figure 17 (b), start muscle 93b ' the first concave curved surface and limit rib 93a ' corresponding thereto second Between concave curved surface, the first space of non-closed is surrounded；Start muscle 93b " the first concave curved surface and limit corresponding thereto Between position muscle 93a " the second concave curved surface, the second space of non-closed is surrounded.Wherein, it is mounted with first in the first space Shock reducing structure 93c, is mounted with the second shock reducing structure 93c ' in second space.In the present invention, the first shock reducing structure 93c and the second damping Body 93c ' uses completely identical in structure cylinder or spheroid, and it uses plastic material to be made, such as rubber, and in processing, the One shock reducing structure 93c and the second shock reducing structure 93c ' can use solid construction, it would however also be possible to employ hollow-core construction.

It is preferred that, the first shock reducing structure 93c and the second shock reducing structure 93c ' radius are less than in the first concave curved surface and second The radius of curvature of concave arc surface, the second concave curved surface when the first concave curved surface and corresponding thereto constitute the first space or During second space, can make placement the first shock reducing structure 93c in the inner or the second shock reducing structure 93c ' respectively with first imploded arcs Shape face and the second concave curved surface gap coordinate, and such shock reducing structure can not be stuck, and be easy to shock reducing structure to be touched with limit rib There is certain deformation when hitting contact and strengthen cushioning effect.It is preferred that, the first shock reducing structure 93c and the second shock reducing structure 93c ' are described Unfixed form is used in first space and second space, freely can roll or slide in the first space and second space, Also, the first shock reducing structure 93c and the second shock reducing structure 93c ' is distributed in yi word pattern, i.e. the first shock reducing structure 93c and the second shock reducing structure 93c ' is symmetrically distributed in the both sides of the rotating shaft 11.

Wherein, axle sleeve 93a tubular body outer wall and start muscle 93b ' or start between muscle 93b " inwall it is maximum away from From the diameter less than the first shock reducing structure 93c and the second shock reducing structure 93c ' so that start muscle 93b ', start muscle 93b " with it is spacing Muscle 93a ', 93a " respectively close to when so that the first shock reducing structure 93c and the second shock reducing structure 93c ' are squeezed, and start muscle 93b ' It will not be collided with limit rib 93a ', startup muscle 93b " and limit rib 93a " itself, hence in so that axle sleeve 93a will not be with startup 93b direct collisions or friction are covered, i.e., will not cause axle sleeve 93a and the direct collision of magnetic core 15 or friction, so as to reduce exchange forever During magnetic draining pump startup between axle sleeve 93a and the first shock reducing structure 93c and the second shock reducing structure 93c ', the first shock reducing structure 93c is with starting Cover between 93b and magnetic core 15, the second shock reducing structure 93c ' covers beating noise between 93b and magnetic core 15 with starting, and makes AC permanent-magnet Vibration is smaller during draining pump work, quieter.

In design, start muscle 93b ', start muscle 93b " and the first shock reducing structure 93c, the second shock reducing structure 93c ' along rotating shaft The height of 11 axis direction is not more than limit rib 93a ', 93a " height in the axial direction, and subtracts in order to avoid first Shake body 93c and the second shock reducing structure 93c ' and depart from first space and second space, as shown in Figure 67, in axle sleeve 93a tubulose Main body one end is equipped with the circular platform 93a " ' stretched out by axle center, platform 93a " ' bottom and limit rib 93a ', 93a " Top be respectively fixedly connected with, so as to the first shock reducing structure 93c and the second shock reducing structure 93c ' be blocked respectively empty described first Between and second space in.During fabrication, axle sleeve 93a tubular body, platform 93a " ' and limit rib 93a ', 93a " are using modeling The integrally formed structure that collagen material is obtained by the method for injection process.Also, start muscle 93b ', 93b " to cover with starting The integrally formed structures of 93b also to be obtained using plastic material by the method for injection process.

The operation principle of the first actuating mechanism of the present invention is described with reference to Figure 16-18.

As shown in figure 16, when limit rib 93a ' is close to corresponding startup muscle 93b ', the limit rib 93a ' and open The first concave curved surface and the second concave curved surface of dynamic muscle 93b ' opposite sides are located at same circumference, and enclose non-closed First space.Now, limit rib 93a " and startup muscle 93b " are close to each other, and limit rib 93a " and startup muscle 93b " opposite sides The first concave curved surface and the second concave curved surface also be located at same circumference, enclose the second space of non-closed.Now, divide The the first shock reducing structure 93c and the line of the second shock reducing structure 93c ' symmetrical centre not being placed in the first space and second space are worn The axis of rotating shaft 11, i.e. the first shock reducing structure 93c and the second shock reducing structure 93c ' are crossed centered on the axis of rotating shaft 11, carrier phase shift 180°。

As shown in Figure 17 (a), (b), to make actuating mechanism, position is rotated clockwise as shown in Figure 16, and stator coil 7 is produced Action of alternating magnetic field drives magnetic core 15 to be carried out clockwise around the axis of rotating shaft 11 in stator core by stator core 8 Rotate, be fixed on startup on magnetic core 15 and cover 93b with magnetic core 15 rotationally clockwise, start set 93b startup muscle 93b ', Start muscle 93b " promotes the first shock reducing structure 93c and the second shock reducing structure 93c ' to contact limit rib 93a ' and limit rib 93a " respectively, from And promote and be set with the axle sleeve 93a for being fixed on rotating shaft rotationally clockwise, axle sleeve drives rotating shaft 11 therewith along side clockwise To rotation, and then the impeller 2 being fixedly connected with rotating shaft 11 is driven to be rotated in the clockwise direction.

As shown in figure 18, under action of alternating magnetic field, magnetic core 15 is rotated in an anti-clockwise direction around the axis of rotating shaft 11, The startup being fixed on magnetic core 15 covers 93b as magnetic core 15 is rotated in an anti-clockwise direction.

Start the startup muscle 93b ' on set 93b, startup muscle 93b " to be turned to as shown in Figure 18 (b) by Figure 18 (a) position Position when, due to start muscle 93b ' and limit rib 93a " have gap, startup muscle 93b " and limit rib 93a ' between have between Gap, therefore startup muscle 93b ' can be turned through limit rib 93a ", starts muscle 93b " and can be turned through limit rib 93a ', and promote second to subtract respectively Shake body 93c ' and the first shock reducing structure 93c is rotated counterclockwise after certain angle, is made startup muscle 93b ' and is started muscle 93b " by second Shock reducing structure 93c ' and the first shock reducing structure 93c contact (shown in such as Figure 18 (c)) with limit rib 93a ' and limit rib 93a " respectively, thus Promote axle sleeve 93a to rotate, axle sleeve 93a then drives the rotating shaft 11 for being secured to connection to rotate in the counterclockwise direction, and then drive solid Impeller 2 due to the one end of rotating shaft 11 is rotated counterclockwise.

As shown in Figure 17 and Figure 18, in fact, by startup muscle 93b ' and starting muscle 93b " along the circumferential direction in startup set 93b It has been separated to form two substantially semi-circular regions, i.e. first area A and second area B, the first shock reducing structure 93c can only be in the firstth area Domain A activities, and the second shock reducing structure 93c ' can only be in second area B activities.

It is preferred that, when the drive shaft 11 of magnetic core 15 of the invention is rotated, the maximum angle of the idle running of magnetic core 15 is 220 °.

The actuating mechanism of the present invention, when magnetic core is rotated, starts muscle and contacts limit rib by shock reducing structure with propeller shaft sleeve turn Dynamic, the rotation of axle sleeve drives the axis of rotation for being installed with impeller, and then impeller is rotated.Therefore, exchange of the invention The staring torque resulted in of permanent magnetism draining pump is big, starts more steady；Particularly, between shock reducing structure and limit rib and startup muscle For linear contact lay, friction each other is sliding friction, therefore is damped small；Two shock reducing structures are cylindrical and are in starting in set Symmetrical and work simultaneously, therefore the good dynamic balance of rotor assembly, eccentric force is small, and service life is long.

As shown in figures 19-22, the structure of second of actuating mechanism of the present embodiment is shown in figure, starts 270 ° of muscle idle running Contacted afterwards by shock reducing structure and promote limit rib.

As shown in Figure 19,20,21, the actuating mechanism, which has, starts set 93b inwalls provided with a startup muscle 93b ', axle sleeve 93a outer walls as shown in figure 20, in the cavity between starting set 93b and axle sleeve 93a, are starting provided with a limit rib 93a ' Circumferentially disposed shock reducing structure 93c is mounted between muscle 93b ' and limit rib 93a ', starts muscle 93b ' and limit rib 93a ' Between have anti-interference gap (as shown in figure 21), shock reducing structure 93c can startup muscle 93b ' promotion under it is circumferentially rotated.

In addition, being provided with bonnet 93e in the one end of magnetic core 15 away from impeller 2, between axle sleeve 93a and bonnet 93e, start Sealing ring 93d, 93d are mounted with respectively between set 93b and axle sleeve 93a ', also, provided with multiple on shock reducing structure 93c ' inwall Muscle 93f is lubricated, it is possible to reduce the contact area of shock reducing structure and axle sleeve outer wall and startup set inwall, so as to reduce frictional force.

When stator coil 7 is passed to alternating current, the alternating magnetic field that stator coil 7 is produced drives magnetic by stator core 8 Core 15 is rotated, start set 93b is rotated simultaneously with it in the presence of magnetic core 15, start cover 93b inwalls startup muscle 93b ' meeting with Limit rib 93a ' the contacts of axle sleeve 93a outer walls, and rotated by limit rib 93a ' propeller shaft sleeves 93a, due to axle sleeve 93a and rotating shaft 11 are fixedly connected, therefore rotating shaft 11 is rotated accordingly, and impeller 2 is fixed on one end of rotating shaft 11, therefore impeller 2 is with turning The rotation of axle 11 and rotate so that AC permanent-magnet draining pump realizes the function of draining.

Specifically, it is for inserts, using the method for injection process plastic material to be fixed on into magnetic with magnetic core 15 to start set 93b One end of core 15, starting set 93b has the accommodating cavity for being used for disposing axle sleeve 93a, is provided with the inwall for starting set 93b towards startup A startup muscle 93b ' of 93b axis direction protrusion is covered, and startup muscle 93b ' is segment.

Axle sleeve 93a has tubular body and limit rib 93a ', and limit rib 93a ' is by the outwardly sector of tubular body Body, it is preferred that the segment that the segment starts muscle 93b ' with constituting has the identical center of curvature, and the center of curvature is located at On the axis of rotating shaft 11.

Particularly, as shown in figure 21, limit rib 93a ' exterior radius is slightly less than the inwall radius for starting muscle 93b ', therefore 93b rotate counterclockwises are covered starting, startup muscle 93b ' is rotated to the position coincided with limit rib 93a ' shown in Figure 21, then Due to limit rib 93a ' outer wall and start muscle 93b ' inwall between there is the gap of anti-interference so that limit rib 93a ' and open Dynamic muscle 93b ' can be rotated against and will not piled up, i.e., will not be interfered in the rotation process.

As shown in figure 20, the startup muscle 93b ' both sides for starting set are separated into two sector spaces by limit rib 93a ', i.e., Two fan-shaped chambers are formed between limit rib 93a ' and startup muscle 93b ' opposing sidewalls, now shock reducing structure 93c is placed in wherein In one fan-shaped chamber.Shock reducing structure 93c is the sector structure similar to fan-shaped chamber shape, and it uses plastic material to be made, such as rubber, And in processing, shock reducing structure 93c can use solid construction, it would however also be possible to employ hollow-core construction.

It is preferred that, shock reducing structure 93c is the generally fan-shaped body that central angle is 90 °, the equal position of the center of curvature of its inside and outside fan-shaped wall In on the axis of rotating shaft 11.Shock reducing structure 93c outer fan-shaped wall radius is more than the inwall radius for starting muscle 93b ', shock reducing structure 93c's Interior fan-shaped wall radius is less than limit rib 93a ' exterior radius, so that the tubulose of shock reducing structure 93c interior fan-shaped wall and axle sleeve The outer wall gap of main body coordinates, between the inwall that shock reducing structure 93c outer fan-shaped wall and startup are covered outside 93b startup muscle 93b ' is formed Gap coordinates, and shock reducing structure 93c two side walls can respectively with start muscle 93b ' two side walls and two of limit rib 93a ' Side wall is in contact.Also, shock reducing structure 93c is freely rotated in the fan-shaped chamber.

Wherein, axle sleeve 93a tubular body outer wall and the ultimate range started between muscle 93b ' inwalls are less than shock reducing structure 93c Thickness be the difference of inside and outside fan-shaped wall radius so that start muscle 93b ' and limit rib 93a ' close to when, make shock reducing structure 93c It is squeezed, and starting muscle 93b ' and limit rib 93a ' itself will not collide so that axle sleeve 93a will not be direct with startup set 93b Collision rubs, so that axle sleeve 93a covers with shock reducing structure 93c, shock reducing structure 93c with starting when reducing AC permanent-magnet draining pump startup Beating noise between 93b and magnetic core 15, vibration is smaller when making AC permanent-magnet draining pump work, quieter.

In design, the height along the axis direction of rotating shaft 11 for starting muscle 93b ' and shock reducing structure 93c is not more than limit rib 93a ' height in the axial direction, and in order to avoid shock reducing structure 93c departs from the fan-shaped chamber, as shown in fig. 7, in axle sleeve 93a tubular body outer wall is equipped with outwardly platform, and the bottom of platform is connected with limit rib 93a ' top, so that will Shock reducing structure 93c is blocked in the fan-shaped chamber.

During fabrication, axle sleeve 93a tubular body, platform and limit rib 93a ' are to pass through injection process using plastic material The integrally formed structure that is obtained of method.Also, it is also to pass through note using plastic material to start muscle 93b ' with starting set 93b The integrally formed structure that the method for modeling processing is obtained.

The operation principle of the actuating mechanism of the present invention is described with reference to Figure 20-Figure 22.

As shown in figure 20, when limit rib 93a ' and startup muscle 93b ' along the circumferential direction mutually stagger, in shown in Figure 20 Position, form two fan-shaped chambers between side wall relative with muscle 93b ' is started limit rib 93a ', shock reducing structure 93c is located therein In one fan-shaped chamber of side, now, a shock reducing structure 93c side wall offsets with starting a muscle 93b ' side wall, shock reducing structure 93c The side wall of another side wall and limit rib 93a ' offset.

Now, stator coil 7 produces alternating magnetic field, if alternating magnetic field drives magnetic core 15 around rotating shaft by stator core 8 11 axis both clockwise direction is rotated, suitable around the axis of rotating shaft 11 with magnetic core 15 with the startup set 93b that magnetic core 15 is fixed Clockwise is rotated, and a side wall for starting the startup muscle 93b ' on set 93b contact and promotes shock reducing structure 93c rotations and against limit Position muscle 93a ' side wall, if too small due to starting stroke, the resistance of start is excessive and is not enough to impeller-hub set and is driven by rotating shaft Wheel rotation.

At this moment, magnetic core 15 is under magnetic fields, will rotate counterclockwise, drive be secured to the startup set 93b of connection around Rotating shaft 11 axis carry out it is anticlockwise rotate, arrive first at position as shown in figure 21, due to start muscle 93b ' and There is anti-interference gap between limit rib 93a ', therefore start muscle 93b ' rotations by limit rib 93a, and make startup muscle 93b's ' Another side wall is contacted with shock reducing structure 93c another side wall；When startup muscle 93b ' continues to rotate in the counterclockwise direction, start Muscle 93b ' promotes shock reducing structure 93c to be rotated in the counterclockwise direction around the axis of rotating shaft 11, until a shock reducing structure 93c side wall is supported On limit rib 93a ' another side wall, as shown in figure 22.Obviously, the start-up course counterclockwise has larger unloaded mistake Journey (refers to since rotate counterclockwise untill a shock reducing structure 93c side wall is against on limit rib 93a ' another side wall Process) rotational angle.

In the position shown in Figure 22, start set and promote shock reducing structure 93c to continue to rotate in an anti-clockwise direction therewith, pass through shock reducing structure 93c promotes limit rib 93a ' to rotate so that axle sleeve 93a is rotated in an anti-clockwise direction, and axle sleeve 93a is by being secured to connection Rotating shaft 11, drives and is fixed on the impeller 2 of the one end of rotating shaft 11 along rotating in an anti-clockwise direction.

It is preferred that, when the drive shaft 11 of magnetic core 15 of the invention is rotated, the rotary maximum angle of magnetic core 15 is 270 °.

Therefore, start according to the process shown in Figure 20-22 so that start muscle 93b ' and turn to Figure 22's by Figure 20 position Position, unloaded rotational travel has reached 270 °.The increase of unloaded rotational travel will cause rotating speed just to couple leaf when reaching higher value Wheel load, according to the rotating speed of such motor --- torque mechanical property, torque during this larger rotating speed also has higher value, and Larger rotary inertia kinetic energy has been formed, i.e., has now been conducive to actuating mechanism to start impeller rotation.

Actuating mechanism with said structure, when magnetic core is rotated, promotes shock reducing structure, then pass through shock reducing structure by starting muscle The method for promoting limit rib, propeller shaft sleeve is rotated, so that axis of rotation, and then impeller rotation so that it is of the invention The staring torque of AC permanent-magnet draining pump is big, starts more steady；And sealing ring can seal to starting the grease in set, and And it is provided with multiple lubrication muscle in the inwall of shock reducing structure, it is to avoid rotor assembly longevity of service makes shock reducing structure lose lubrication and damage, Therefore service life is long；Shock reducing structure uses sector structure, and its stress is more well-balanced, therefore it is small to start noise.

Although the present invention has been described above with particularity, but the invention is not restricted to this, those skilled in the art can To be modified according to the principle of the present invention, therefore, the various modifications that all principles according to the present invention are carried out all should be understood to Fall into protection scope of the present invention.

Claims (10)

1. a kind of AC permanent-magnet draining pump for reducing vibrating noise, including pump cover (1), the pump housing (10), in addition to magnetic core (15), Rotating shaft (11), stator core (8) and coil (7), coil (7) are wound in coil rack, and stator core (8) is assemblied in coil (7), It is characterized in that：

The pump housing (10) is formed for the profile integrated injection molding of the coil (7) after assembling, coil rack and stator core (8) Housing；

The housing of the integrated injection molding formation limits one and is opened on top and extends to being used for for the pump housing (10) center from opening The magnetic core accommodation space (10.1) of accommodating magnetic core (15)；

The magnetic core accommodation space (10.1) is enclosed by the inner surface of the rotator seat (17) for supporting rotor assembly of the pump housing (10) Into；

In the embedded rotator seat (17) of the indent arc sections (81) of the stator core (8)；

The open top for the magnetic core accommodation space that the housing is limited is provided with the supporting structure for supporting shaft bearing；

Stator module including the coil (7) and stator core (8) and including the rotating shaft (11) and located at rotating shaft (11) On the rotor assembly (20) of magnetic core (15) that rotates about be placed within the pump housing (10), stator module is produced to magnetic core (15) Alternating magnetic field is given birth to drive magnetic core to rotate；

The rotor assembly also includes being fixed on the axle sleeve (93a) in rotating shaft and at least one located at axle sleeve (93a) outer wall Limit rib, rotor assembly is rotated by propeller shaft sleeve (93a) drives rotating shaft (11) to be rotated.

2. AC permanent-magnet draining pump according to claim 1, it is characterised in that the pump housing (10) includes at least seal line Enclose first pump housing portion (10a) of (7) and the second pump housing portion (10b) for installing rotor assembly (20), and the first pump housing portion (10a) is connected as one with the second pump housing portion (10b).

3. AC permanent-magnet draining pump according to claim 2, it is characterised in that the rotator seat (17) and second pump (10b) is structure as a whole in body portion, and second pump housing portion (10b) has positioned at its outer rim for connecting the pump cover (1) Connecting portion (18).

4. AC permanent-magnet draining pump according to claim 2, it is characterised in that the coil (7) is placed in described first In pump housing portion (10a), the indent arc sections (81) of the stator core (8) stretch out in the first pump housing portion.

5. AC permanent-magnet draining pump according to claim 4, it is characterised in that the second pump housing portion (10b) is by stator core (8) the part sealing in addition to the Inner arc surface of indent arc sections (81) is surrounded, and makes to stretch out in outside the first pump housing portion (10a) Embedded second pump housing portion (10b) of indent arc sections (81) in.

6. AC permanent-magnet draining pump according to claim 2, it is characterised in that the rotator seat (17) is one end open Cylinder, the Inner arc surface of cylinder and the Inner arc surface (81a) of the indent arc sections (81) of embedded stator core (8) are common Surround the magnetic core accommodation space for accommodating the magnetic core.

7. AC permanent-magnet draining pump according to claim 6, it is characterised in that the interior concave arc of the stator core (8) The Inner arc surface in portion (81) is configured to a part for the inner surface of the rotator seat (17).

8. AC permanent-magnet draining pump according to claim 6, it is characterised in that the interior concave arc of the stator core (8) The inner surface (17a) of the rotator seat (17) is protruded to axis direction at least part Inner arc surface (81a) in portion (81).

9. AC permanent-magnet draining pump according to claim 2, it is characterised in that the rotor assembly (20) also includes：Gu Surely connect the startup set (93b) of the magnetic core (15) one end, its inwall provided with least one startup muscle, the startup muscle with it is described Limit rib is not interfered, and the set that starts is made up of nonmagnetic substance.

10. AC permanent-magnet draining pump according to claim 9, it is characterised in that lead between the startup muscle and limit rib Shock reducing structure contact is crossed, starting has gap between muscle and limit rib, when the gap to start, start muscle and connect in contact shock reducing structure Touch and promote the maximum idle angular before limit rib to be at least 220 °.