CN110388324B

CN110388324B - Pump and dish washer with same

Info

Publication number: CN110388324B
Application number: CN201810368463.1A
Authority: CN
Inventors: 王彬; 王金水; 尹斌; 黄宁杰
Original assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Current assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Priority date: 2018-04-23
Filing date: 2018-04-23
Publication date: 2021-02-09
Anticipated expiration: 2038-04-23
Also published as: CN110388324A

Abstract

The invention discloses a pump and a dish washing machine with the pump, wherein the pump is provided with a water inlet and a water outlet and comprises a pump shell, an impeller and a motor, a pump cavity is arranged in the pump shell, and the water inlet and the water outlet are both communicated with the pump cavity; the impeller is arranged in the pump cavity; the motor with the impeller links to each other, the motor includes the rotor and centers on the stator module of rotor, stator module includes stator core, insulating skeleton and stator winding, stator core adopts stator punching strip end to become the ring shape, stator punching strip adopts two at least stator punching sheets to pile up and forms, insulating skeleton with stator core cooperation, just insulating skeleton is in when stator punching strip is the linear type the integrative formation of moulding plastics of surface of stator punching strip, stator winding is around establishing insulating skeleton's surface. The pump of the invention can improve the insulativity of the insulating framework.

Description

Pump and dish washer with same

Technical Field

The invention relates to the technical field of dish washing machines, in particular to a pump.

Background

Household appliances such as dishwashers often require a power system and a heating system to work in concert to provide power for the media while heating the media. The power system comprises a motor part, and the motor usually adopts a structure that a stator core is matched with an insulating framework so as to be convenient for inserting and passing wires on the stator core.

In the related art, in order to cooperate stator core and insulating skeleton, the insulating skeleton including upper portion skeleton and lower part skeleton is prefabricated usually, arranges upper portion and the lower part of stator core in respectively with upper portion skeleton and lower part skeleton to with upper portion skeleton and lower part skeleton lock together, in order to realize the cooperation of stator core and insulating skeleton. However, in the related art, the upper and lower frames are engaged with each other, so that a gap is easily formed, which affects the insulation of the frames.

Disclosure of Invention

To this end, the present invention provides a pump capable of improving the insulation of a frame.

The invention also provides a dishwasher with the pump.

The pump comprises a pump shell, wherein a pump cavity is arranged in the pump shell, and a water inlet and a water outlet which are communicated with the pump cavity are arranged on the pump shell; an impeller disposed within the pump chamber; the motor, the motor with the impeller links to each other, the motor includes the rotor and centers on the stator module of rotor, stator module includes stator core, insulating skeleton and stator winding, stator core adopts stator punching strip end to become the ring shape, stator punching strip adopts two at least stator punching sheets to pile up and forms, insulating skeleton with stator core cooperation, just insulating skeleton is in when stator punching strip is the linear type the integrative formation of moulding plastics of surface of stator punching strip, stator winding is around establishing insulating skeleton's surface.

According to the pump provided by the embodiment of the invention, the insulating framework is integrally formed on the stator punching bar by injection molding when the stator punching bar is linear, so that the problem that gaps are easy to appear in the prior art is avoided, and the insulativity of the insulating framework can be improved.

In some embodiments, the insulating skeleton includes the base member, the base member has the chamber that holds that the stator core runs through wherein, the base member includes skeleton yoke portion, connects the skeleton tooth portion of the inner of skeleton yoke portion and connects the skeleton boots portion of the inner of skeleton tooth portion, skeleton yoke portion, skeleton tooth portion and skeleton boots portion when the stator is towards the strip and is the linear type integrated injection moulding and form on the stator dashes the strip, the stator winding is around establishing the surface of skeleton tooth portion.

In some embodiments, the inner edge of the skeletal shoe is an arcuate surface that is concave from the inside to the outside and has a notch.

In some embodiments, the pump further includes a water diversion disc disposed at the first end of the pump housing, the water diversion disc including a cylinder and a flange, the first end of the cylinder being closed, the flange extending radially outward from an outer periphery of the second end of the cylinder along the cylinder, the flange being connected to the pump housing, the rotor being disposed inside the cylinder, and the stator assembly surrounding an outer periphery of the cylinder.

In some embodiments, the pump further comprises a heating assembly, the heating assembly comprising a heating plate and a heating pipe, the heating plate being disposed at the second end of the pump housing, the heating pipe being disposed at an outer end face of the heating plate.

In some embodiments, the pump chamber includes an impeller chamber in communication with the water outlet and a water inlet chamber in communication with the water inlet, the impeller is disposed within the impeller chamber, and the heating assembly is configured to heat water within the water inlet chamber.

In some embodiments, the water inlet is provided in a peripheral wall of the pump chamber, the water outlet is provided in the heating pan and the water outlet is located at a substantially central position of the heating pan.

In some embodiments, the pump further comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water inlet, and the water outlet pipe is connected with the water outlet.

In some embodiments, the pump further includes a water diversion disc and a heating assembly, the water diversion disc is disposed at a first end of the pump housing, the water diversion disc includes a barrel and a flange, the first end of the barrel is closed, the flange extends outward from an outer periphery of a second end of the barrel in a radial direction of the barrel, the flange is connected to the first end of the pump housing, the rotor is disposed inside the barrel, the stator assembly surrounds the outer periphery of the barrel, the heating assembly includes a heating disc and a heating pipe, the heating disc is disposed at the second end of the pump housing, the heating pipe is disposed at an outer end face of the heating disc, the pump housing includes an impeller chamber communicating with the water outlet and a water inlet chamber communicating with the water inlet, the heating assembly is used for heating water in the water inlet chamber, the impeller is rotatably disposed in the impeller chamber, and the water inlet is disposed at a peripheral wall of the pump housing, the water outlet is arranged on the heating plate and is positioned at the approximate central position of the heating plate, the pump further comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water inlet, and the water outlet pipe is connected with the water outlet.

A dishwasher according to an embodiment of the second aspect of the present invention comprises a pump as described in any of the above embodiments.

Drawings

FIG. 1 is a cross-sectional view of a pump according to an embodiment of the present invention;

FIG. 2 is an overall block diagram of a stator assembly according to an embodiment of the present invention;

fig. 3 is an overall structural view of a stator core according to an embodiment of the present invention;

FIG. 4 is a block diagram of a stator bar according to an embodiment of the present invention;

fig. 5 is a structural view of a stator lamination according to an embodiment of the present invention;

FIG. 6 is an overall structural view of an insulating bobbin according to an embodiment of the present invention;

FIG. 7 is an isometric view of an insulating skeleton according to an embodiment of the invention;

FIG. 8 is a block diagram of an insulation backbone with power-piercing glue shells according to an embodiment of the present invention;

fig. 9 is a block diagram of an insulating carcass provided with a center-line piercing gel shell in accordance with an embodiment of the present invention.

Fig. 10 is a schematic view of an insulating frame integrally injection-molded on a stator bar punch according to an embodiment of the present invention.

Reference numerals:

stator assembly 100, stator core 1, stator punching bar 11, stator punching sheet 110, stator yoke 111, stator tooth 112, stator shoe 113, stator tooth slot 114, deformation slot 115, arc slot 116, insulating frame 2, base 21, accommodating cavity 201, frame yoke 211, frame tooth 212, frame shoe 213, upper end inner edge 2131, lower end inner edge 2132, baffle 22, body 221, protrusion 222, through hole 23, opening 24, communication hole 25, notch 26, positioning boss 27, fixing column 28, stator winding 3, puncture type rubber shell 4, power puncture type rubber shell 41, center line puncture type rubber shell 42, pump shell 5, pump cavity 51, impeller chamber 511, water inlet chamber 512, water inlet pipe 52, water outlet pipe 53, impeller 6, motor 7, motor shaft 71, rotor 72, water diversion disc 8, cylinder 81, flange 82, heating assembly 9, heating disc 91, and heating pipe 92.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

As shown in fig. 1, a pump according to an embodiment of the present invention can be used in a dishwasher, and the pump includes a pump housing 5, an impeller 6, and a motor 7, the pump having a water inlet and a water outlet, the pump housing 5 having a pump chamber 51 therein, the water inlet and the water outlet both communicating with the pump chamber 51.

An impeller 6 is disposed within the pump chamber 51, and a motor 7 is disposed at a first end of the pump housing 5, with a motor shaft 71 of the motor 7 being connected to the impeller 6. Specifically, as shown in fig. 1, the motor 7 is disposed at the left end of the pump housing 5, the middle of the motor 7 is disposed with a motor shaft 71 extending along the axial direction and being rotatable, and the right end of the motor shaft 71 is connected to the impeller 6 to drive the impeller 6 to rotate, so that the impeller 6 drives the water flow in the pump cavity 51 to flow.

As shown in fig. 1 to 10, the motor 7 includes a rotor 72 and a stator assembly 100 surrounding the rotor 72, the stator assembly 100 includes a stator core 1, an insulating frame 2 and a stator winding 3, as shown in fig. 2, 3 and 4, the stator core 1 is bent into a circular shape by using a stator punching bar 11, the stator punching bar 11 is connected end to end, and the stator punching bar 11 is formed by stacking a plurality of stator punching sheets 110. Here, "end-to-end" is to bend the stator bar 11 so that a first end of the stator bar 11 and a second end of the stator bar 11 are connected, thereby forming the circular ring-shaped stator core 1. In other words, as shown in fig. 3 and 4, the stator bar 11 is in a flat state before being formed into a circular ring shape and has a first end and a second end, and the stator bar 12 is bent into a circular ring shape and connects the first end (left end shown in fig. 4) and the second end (right end shown in fig. 4) thereof. The "stacking" is to stack a plurality of stator laminations 110 together in sequence and connect adjacent stator laminations 110.

Specifically, stator punching sheet 110 is the bar, and the stator punching sheet 110 who adopts the bar can make full use of material when the punching press, reduces the waste material volume, improves the utilization ratio of punching sheet, has reduced manufacturing cost, and the scale and automated production of being convenient for moreover have advantages such as motor course of working is convenient, production efficiency is high and motor efficiency height. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.

Specifically, as shown in fig. 4 and 5, the stator bar 11 includes a plurality of stator yoke portions 111 connected in sequence, each stator yoke portion 111 is provided with a stator tooth portion 112, one end of the stator tooth portion 112 away from the stator yoke portion 111 is provided with a stator shoe portion 113, and for example, as shown in fig. 2, the stator yoke portion 111, the stator tooth portion 112, and the stator shoe portion 113 are connected in sequence in the direction from the outside to the inside. A stator tooth groove 114 is arranged between two connected stator tooth parts 112, a deformation groove 115 is arranged between two adjacent stator yoke parts 111, the deformation groove 115 is communicated with the stator tooth groove 114, and the deformation groove 115 can provide a deformation space, so that the stator punching strip 11 can be bent into the annular stator core 1. When the stator punching bar 11 is bent into a circular ring shape, the deformation groove 115 may be closed, so that both side wall surfaces of the deformation groove 115 may be butted.

Specifically, the deformation groove 115 includes a circular groove and a truncated cone groove, which extend in the width direction of the stator bar 11 (i.e., the axial direction of the stator core 1) and penetrate the stator bar 11, respectively. The circular groove communicates with the truncated cone groove, and both side surfaces of the truncated cone groove are formed as side surfaces of the two stator yokes 111, respectively, in other words, the truncated cone groove 1012 between the adjacent two stator yokes 111 has two side wall surfaces, one of which is a side surface of one stator yoke 111 and the other of which is a side surface of the other stator yoke 111. When the stator punching strip 11 is bent, the two stator yokes 111 rotate relatively, the openings of the truncated cone-shaped grooves are gradually reduced, when the stator punching strip is connected end to form a ring, the side surfaces of the two stator yokes 111 contact with each other, at the moment, the truncated cone-shaped grooves can be changed into a linear shape from an open state, and the circular grooves can be changed into a closed shape from an open shape. Through setting up the deformation groove 115, be convenient for on the one hand the stator towards the strip end to end and connect into the ring shape, on the other hand can influence the magnetic flux, improves motor working property.

The outer end of stator yoke portion 111 still is equipped with the arc wall 116 that is used for cooperating insulating skeleton 2, can alleviate product weight through setting up arc wall 116, reduces material cost, reduces overall dimension, the outside bulge can not appear promptly, does benefit to stator core appearance rounding off behind stator punching strip 11 bending formation ring shape and the ring shape of circle. The stator core 1 is provided with the insulating framework 2 in a matched mode, specifically, each stator yoke portion 111 and each stator tooth portion 112 of the stator core 1 are provided with the insulating framework 2 in a matched mode, so that the stator core 1 is convenient to embed wires and cross wires, namely, the stator winding 3 is wound on the insulating framework 2, the insulating property of the stator core is guaranteed, and the insulating framework 2 is integrally formed by injection molding on the outer surface of the stator punching strip 11 when the stator punching strip 11 is in a linear type, as shown in fig. 10. In other words, the stator bars 11 are straight bars before bending, and the stator bars 11 are bent into a circular ring shape and connected end to form the stator core 1. It can be understood that the stator bars 11 fitted with the insulating frame 2 are bent into a circular ring shape and connected end to form a stator assembly. It can be understood that the insulating framework 2 is formed by injection molding and then wound when the stator core 1 is a straight strip, so that the motor performance is convenient to mount and enhance, and the production efficiency is improved. Specifically, stator core 1 is when the vertical bar between two adjacent stator tooth 112 apart from great, so the installation of being convenient for, and on the other hand shaping insulating skeleton 2 parallel winding when the motor is the vertical bar, notch between the adjacent stator boots 113 can design less when stator core becomes the circle, and stator boots 113 can design great, is favorable to the magnetic field to receive to improve the performance of motor.

According to the pump provided by the embodiment of the invention, the insulating framework is formed by integral injection molding when the stator punching strip is linear, so that the problem of gaps is avoided, the insulativity of the insulating framework is improved, the pressure resistance is ensured, the reliability is improved, and the wire is not easy to be damaged; the distance between the adjacent framework boots can be made very small, so that the performance of the motor and the pump is improved; when the stator punching strip is in a linear type, the insulating framework and the winding are injected, so that the yield and the production efficiency are improved; moreover, the dishwasher is compact in structure and small in occupied space by being applied to the dishwasher.

In some embodiments, the pump further includes a diverter tray 8, the diverter tray 8 is disposed at a first end (left end shown in fig. 1) of the pump housing 5, the diverter tray 8 includes a barrel 81 and a flange 82, the first end (left end shown in fig. 1) of the barrel 81 is closed, the flange 82 extends radially outward of the barrel 81 from an outer periphery of a second end (right end shown in fig. 1) of the barrel 81, the flange 82 is connected to the pump housing 5, the rotor 72 is disposed inside the barrel 81, and the stator assembly 100 surrounds the outer periphery of the barrel 81. In other words, as shown in fig. 1, the left end of the pump housing 5 is connected to the flange 82 of the water diversion disk 8, the left end of the cylinder 81 is closed, the right end of the cylinder 81 is opened, the rotor 72 is disposed inside the cylinder 81, the left end of the motor shaft 71 is disposed inside the cylinder 81, the right end of the motor shaft 71 is extended out of the right end of the cylinder 81 and connected to the impeller 6, and the stator assembly 100 is disposed around the outer circumference of the cylinder 81. It will be appreciated that the rotor 72 is located inside the water knock out tray 8 and the motor 7 can be cooled by the water in the pump, improving the cooling efficiency of the motor.

In some embodiments, the pump further comprises a heating assembly 9, the heating assembly 9 comprises a heating plate 91 and a heating pipe 92, the heating plate 91 is arranged at the second end (the right end shown in fig. 1) of the pump housing 5, and the heating pipe 92 is arranged at the outer end face (the right end face shown in fig. 1) of the heating plate 91. In other words, as shown in fig. 1, the right end of the pump housing 5 is connected to the heating plate 91, and the right end surface of the heating plate 91 is provided with the heating pipe 92 to heat the water in the pump chamber 51. Further, the heating assembly 9 further comprises a temperature controller and a fuse, the temperature controller and the fuse are both arranged on the right end face of the heating plate 9, effective control over the temperature of water in the pump cavity 51 can be achieved through the temperature controller, and the fuse can improve the use safety of the heating assembly 9.

Further, the pump chamber 51 includes an impeller chamber 511 and a water inlet chamber 512, the impeller 6 is rotatably provided in the impeller chamber 511, the impeller chamber 511 communicates with a water outlet, the water inlet chamber 512 communicates with a water inlet provided in a peripheral wall of the pump chamber 51, the water outlet is provided on the heating pan 8 with the water outlet positioned at a substantially central position of the heating pan 8, i.e., substantially on a center line of the pump chamber 51, and the heating unit 9 is used for heating water in the water inlet chamber 512. Further, the pump further includes a water inlet pipe 52 and a water outlet pipe 53, the water inlet pipe 52 being in communication with the water inlet port, the water outlet pipe 53 being in communication with the water outlet port, in other words, the water inlet pipe 52 is in communication with the water inlet chamber 512 through the water inlet port, and the water outlet pipe 53 is in communication with the impeller chamber 511 through the water outlet port.

In some embodiments, as shown in fig. 2 and fig. 6 to 7, the insulating bobbin 2 includes a base 21, the base 21 includes a bobbin yoke portion 211, a bobbin tooth portion 212 connected to the bobbin yoke portion 211, and a bobbin shoe portion 213 disposed at an end of the bobbin tooth portion 212 far from the bobbin yoke portion 211, an accommodating cavity 201 is provided in the base 21, the stator core 1 penetrates the accommodating cavity 201, and the accommodating cavity 201 is adapted to each stator yoke portion 111, the stator tooth portion 112, and the stator shoe portion 113 of the stator core 1, so that the insulating bobbin 2 is sleeved on the stator core 1.

As shown by arrows in fig. 2 and fig. 6 to 7, the up-down direction is defined as the length direction of the insulating frame 2 (i.e., the axial direction of the stator core 1), the inside-outside direction is defined as the height direction of the insulating frame 2 (i.e., the radial direction of the stator core 1), and the left-right direction is defined as the width direction of the insulating frame 2.

The inner end of the frame yoke 211 is provided with a baffle 22, and the stator winding 3 is wound between the baffle 22 and the frame shoe 213. Specifically, the baffle 22 extends upward from the upper surface of the bobbin yoke 211, and the baffle 28 and the bobbin shoe 213 cooperate to confine the stator winding 3, thereby preventing the lead of the stator winding 3 from overflowing during winding.

Further, the baffle 22 includes a body 221 and a protrusion 222, the body 221 extends upward from the upper surface of the frame yoke 211, and the upper end of the body 221 is provided with the protrusion 222 extending upward from the upper end of the body 221. Further, the projection 222 is provided in plural, and the plural projections 222 are arranged at intervals in the left-right direction on the upper end face of the body 1. It is understood that the plurality of protrusions 222 may be uniformly spaced or non-uniformly spaced on the upper end surface of the body 1 in the left-right direction, that is, the intervals between the adjacent protrusions 222 may be the same or different. Specifically, as in the embodiment of the present invention, there are three protrusions 222, and the three protrusions 222 are a first protrusion, a second protrusion, and a third protrusion in order along the left-right direction, wherein the distance between the first protrusion and the second protrusion is smaller than the distance between the second protrusion and the third protrusion.

Further, the plurality of projections 222 may be identical or different in shape, and substantially identical in shape, and the plurality of projections 222 may be identical or different in width in the left-right direction. As in the embodiment of the present invention, the three protrusions 222 are each substantially trapezoidal when projected in the inward-outward direction, and the width of the protrusion 222 in the left-right direction gradually increases in the direction from bottom to top, in other words, the protrusion 222 is sectioned along a plane from top to bottom, the width of the cross section of the protrusion 222 in the left-right direction gradually increases in the direction from bottom to top to form a substantially trapezoidal shape, and the width of the first protrusion in the left-right direction is greater than the width of the third protrusion in the left-right direction and less than the width of the second protrusion in the left-right direction at the same height in the up-down direction.

Specifically, for example, as shown in fig. 6 and 7, the insulating bobbin 2 includes a bobbin yoke portion 211, a bobbin tooth portion 212, and a bobbin shoe portion 213, which are connected in this order from the outside to the inside. The left end and the right end of the frame yoke part 211 are respectively provided with a through hole 23, the through holes 23 are communicated with the accommodating cavity 201, the left end of the stator yoke part 111 of the stator core 1 penetrates out of the stator yoke part 111 through the through hole 23 at the left end and is connected with the stator yoke part 111 adjacent to the left side of the stator yoke part 111, and the right end of the stator yoke part 112 penetrates out of the stator yoke part 111 through the through hole 23 at the right end and is connected with the stator yoke part 111 adjacent to the right side of the stator yoke part 111. The outer end of skeleton yoke portion 211 has trompil 24, and trompil 24 communicates with holding chamber 201, and the outer end cooperation of stator yoke portion 111 of stator core 1 is in trompil 24. The inner end of the frame shoe 213 is provided with a communication hole 25, the communication hole 25 communicates with the housing chamber 201, the inner end of the stator shoe 113 of the stator core 1 fits in the communication hole 25, and the communication hole 25 of the frame shoe 213 divides the inner edge of the frame shoe 213 into an upper end inner edge 2131 and a lower end inner edge 2132.

In some embodiments, the inner edge of the skeletal shoe 213 is an arcuate surface that is concave from the inside to the outside, and the inner edge of the skeletal shoe 213 has a notch 26. It will be appreciated that the notch 26 is recessed from the arcuate surface from the inside to the outside. Further, the notch 26 is an arc-shaped notch and the arc is concave from the inside to the outside, but the present invention is not limited thereto. It can be understood that, this insulating skeleton simple structure, the inner edge of skeleton boots portion is for following the inside arc face of external concave and being equipped with the breach, can strengthen the thermal diffusivity, save the material, manufacturing cost is reduced, yields and production efficiency have been improved, and pressure resistance improves moreover, thereby the working property of motor has been improved, in addition, when insulating skeleton is moulded plastics to an organic whole, can fix insulating skeleton's mould and stator in this breach department, with the precision positioning between the mould that realizes insulating skeleton and the stator, the precision of shaping insulating skeleton has been improved.

Further, as shown in FIG. 7, the upper end inner edge 2131 and the lower end inner edge 2132 of the skeletal shoe 213 are each an arcuate surface that is concave from the inside to the outside. Further, as shown in fig. 7, each of the upper end inner edge 2131 and the lower end inner edge 2132 of the skeletal shoe portion 213 has a notch 26 recessed from the inside to the outside, and each of the upper end inner edge 2131 and the lower end inner edge 2132 has two notches 26, the two notches 26 being arranged at intervals in the left-right direction.

In some alternative embodiments, one notch 26 on the upper end inner edge 2131 is disposed at the left end of the upper end inner edge 2131, another notch 26 on the upper end inner edge 2131 is disposed at the right end of the upper end inner edge 2131, and the notch 26 at the left end of the upper end inner edge 2131 and the notch 26 at the right end are disposed opposite to each other in the left-right direction; one notch 26 in the lower end inner edge 2132 is provided at the left end of the lower end inner edge 2132 and is opposed to the one notch 26 at the left end of the upper end inner edge 2131 in the up-down direction, the other notch 26 in the lower end inner edge 2132 is provided at the right end of the lower end inner edge 2132 and is opposed to the other notch 26 at the right end of the upper end inner edge 2131 in the up-down direction, and the notch 26 at the left end of the lower end inner edge 2132 and the notch 26 at the right end are opposed to each other in the left-right direction. It is understood that the present invention is not limited thereto, and the notch 26 may be provided only on one of the upper end inner edge 2131 and the lower end inner edge 2132, and the left and right ends of the upper end inner edge 2131 and/or the lower end inner edge 2132 are provided with one notch 26, respectively.

In some embodiments, the outer end of the frame yoke 211 is provided with a positioning boss 27, in particular, the positioning boss 27 extends upward from the upper surface of the frame yoke 211, and the positioning boss 27 is an arc-shaped shell, the arc shape being concave from the outside to the inside, so as to realize the positioning of the stator assembly in the pump shell. Further, the positioning bosses 27 and the baffles 22 are arranged at intervals in the outside-in direction on the upper surface of the bobbin yoke 211. It will be appreciated that the locating boss 27 contacts the rear cover of the motor at one end of the motor and serves as an axial fixing to prevent axial movement of the motor. In addition, at the other end of the motor, the stator assembly is in contact with the water diversion disc to play a fixing role. More specifically, the positioning boss 27 is designed to be more firmly curved to prevent the axial movement of the motor.

Furthermore, the outer end of the frame yoke 211 is further provided with two fixing posts 28, the fixing posts 28 extend upward from the upper surface of the frame yoke 211 for fixing the bridge, the two fixing posts 28 are respectively located at two sides of the baffle 22, for example, as shown in fig. 6 and 7, one fixing post 28 is respectively located at the left side and the right side of the baffle 22.

It can be understood that the number of the insulating frames 2 of the stator assembly is the same as the number of the stator yoke portions 111 and the stator tooth portions 112 of the stator core 1. As shown in fig. 3-5, the stator assembly is comprised of 9 stator yoke sections 111, and there are 9 insulating bobbins 2. As shown in fig. 8-10, 2 of the 9 insulation frames 2 are respectively provided with a puncture-type rubber shell 4, one of them is provided with a power supply puncture-type rubber shell 41 for mounting a power supply terminal, the other is provided with a puncture-type rubber shell 42 for mounting a center line terminal, and the puncture-type rubber shell 4 is connected with a lead of the stator winding 3. Because the puncture type rubber shell can be directly punctured and conducted, the problems of insufficient soldering and desoldering are avoided, the reliability and the yield of the lead connection are improved, the production efficiency is further improved, and the production cost is saved.

Furthermore, the insulation frame 2 with the rubber piercing shell 4 and the rubber piercing shell 4 thereon can also be integrally injection molded, i.e. the frame yoke portion 211, the frame tooth portion 212, the frame shoe portion 213 and the rubber piercing shell are integrally injection molded. In other words, the power-piercing rubber casing 41 and the center-line-piercing rubber casing 42 can be integrally formed with the insulating frame 2. In the prior art, two production lines are usually adopted for producing the insulating framework 2 and the puncture type rubber shell 4, one production line is used for producing the insulating framework, and the other production line is used for producing the puncture type rubber shell, so that the process flow is complex and the production efficiency is low. In the embodiment of the invention, the puncture type rubber shell is injected while the insulating framework is injected, namely, the puncture type rubber shell and the insulating framework are integrally formed, the process flow is simple, and the production efficiency is improved.

A pump according to an embodiment of the present invention will be described with reference to fig. 1-10.

As shown in fig. 1, the pump according to the embodiment of the present invention includes a pump housing 5, an impeller 6, a motor 7, a heating plate 8, and a heating assembly 9, the pump having a water inlet and a water outlet, the pump housing 5 having a pump chamber 51 therein, the water inlet and the water outlet both communicating with the pump chamber 51.

The water diversion disc 8 is arranged at the left end of the pump shell 5, the water diversion disc 8 comprises a cylinder body 81 and a flange 82, the left end of the cylinder body 81 is closed, the right end of the cylinder body 81 is open, the flange 82 extends outwards along the radial direction of the cylinder body 81 from the periphery of the right end of the cylinder body 81, and the flange 82 is connected with the pump shell 5. The heating component 9 comprises a heating plate 91, a heating pipe 92, a fuse and a temperature controller, the heating plate 91 is arranged at the right end of the pump shell 5, and the heating pipe 92, the fuse and the temperature controller are arranged on the right end face of the heating plate 91.

The pump cavity 51 comprises an impeller chamber 511 communicated with a water outlet and a water inlet chamber 512 communicated with a water inlet, the impeller 6 is rotatably arranged in the impeller chamber 511, the water inlet is arranged on the peripheral wall of the pump cavity 51, the water outlet is arranged on the heating plate 8 and is positioned at the approximate center position of the heating plate, namely, the approximate center line of the pump cavity 51, the heating assembly 9 is used for heating water in the water inlet chamber 512, a water inlet pipe 52 is connected on the peripheral wall of the pump cavity 51, the water inlet pipe 52 is communicated with the water inlet chamber 512 through the water inlet, a water outlet pipe 53 is connected on the heating plate 8, and the water outlet pipe 53 is communicated with.

The motor 7 comprises a motor shaft 71, a rotor 72 and a stator assembly 100, wherein the left end of the motor shaft 71 is arranged inside the cylinder 81, the right end of the motor shaft 71 penetrates out of the right end of the cylinder 81 and is connected with the impeller 6, the rotor 72 is arranged inside the cylinder 81, and the stator assembly 100 surrounds the periphery of the cylinder 81.

As shown in fig. 2 to 10, the stator assembly 100 includes a stator core 1, an insulating bobbin 2, and a stator winding 3. The stator core 1 is matched with an insulating framework 2, and the stator winding 3 is wound on the insulating framework 2. The stator core 1 is formed into a circular ring shape by connecting the stator punching strips 11 end to end, and the insulating framework 2 is formed by integral injection molding on the stator punching strips 11 when the stator punching strips 11 are linear, as shown in fig. 10.

The stator punching bar 11 is formed by stacking a plurality of bar-shaped stator punching sheets 110. The stator punching strip 11 comprises 9 stator yoke portions 111 which are sequentially connected, a stator tooth portion 112 is arranged at the center of the inner end of each stator yoke portion 111, a stator shoe portion 113 is arranged at the inner end of each stator tooth portion 112, a stator tooth groove 114 is arranged between every two stator tooth portions 112, a deformation groove 115 is arranged between every two adjacent stator yoke portions 111, each deformation groove 115 comprises a circular groove and a truncated cone groove, and the circular grooves and the truncated cone grooves respectively extend in the width direction of the stator punching strip 11 and penetrate through the stator punching strip 11. The circular groove communicates with the truncated cone groove, and both side surfaces of the truncated cone groove are formed as side surfaces of the two stator yoke portions 111, respectively. The deformation groove 115 is communicated with the stator tooth groove 114, and the deformation groove 115 can provide a deformation space, so that the stator punching strip 11 can be bent into the annular stator core 1. When the stator punching bar 11 is bent into a circular ring shape, the deformation groove 115 may be closed, so that both side wall surfaces of the deformation groove 115 may be butted. The outer end center position of stator yoke portion 111 is equipped with the arc groove 116 that is used for cooperating insulating skeleton 2.

Insulating skeleton 2 includes base member 21, and base member 21 includes skeleton yoke portion 211, establishes skeleton tooth portion 212 in skeleton yoke portion 211's the inner and establishes skeleton boots 213 in skeleton tooth portion 212's the inner, has in the base member 21 and holds chamber 201, and stator core 1 runs through and holds chamber 201, should hold chamber 201 and every stator yoke portion 111 of stator core 1, stator tooth portion 112 and stator boots 113 looks adaptation to make insulating skeleton 2 cover establish on stator core 1. It can be understood that 9 insulating frameworks 2 are arranged on the stator assembly and matched with the stator core 1.

The left end and the right end of the frame yoke part 211 are respectively provided with a through hole 23, the through holes 23 are communicated with the accommodating cavity 201, the left end of the stator yoke part 111 of the stator core 1 penetrates out of the stator yoke part 111 through the through hole 23 at the left end and is connected with the stator yoke part 111 adjacent to the left side of the stator yoke part 111, and the right end of the stator yoke part 112 penetrates out of the stator yoke part 111 through the through hole 23 at the right end and is connected with the stator yoke part 111 adjacent to the right side of the stator yoke part 111. The outer end of skeleton yoke portion 211 has trompil 24, and trompil 24 communicates with holding chamber 201, and the outer end cooperation of stator yoke portion 111 of stator core 1 is in trompil 24. The inner end of the frame shoe 213 is provided with a communication hole 25, the communication hole 25 is communicated with the accommodation chamber 201, the inner end of the stator shoe 113 of the stator core 1 is fitted in the communication hole 25, the inner edge of the frame shoe 213 is divided into an upper end inner edge 2131 and a lower end inner edge 2132 by the communication hole 25 of the frame shoe 213, and the upper end inner edge 2131 and the lower end inner edge 2132 are arc-shaped surfaces which are recessed from the inside to the outside.

The upper end inner edge 2131 and the lower end inner edge 2132 of the framework boot part 213 are both provided with arc-shaped notches 26 which are recessed from the inside to the outside, the upper end inner edge 2131 and the lower end inner edge 2132 are both provided with two notches 26, one notch 26 on the upper end inner edge 2131 is arranged at the left end of the upper end inner edge 2131, the other notch 26 on the upper end inner edge 2131 is arranged at the right end of the upper end inner edge 2131, and the notch 26 at the left end of the upper end inner edge 2131 and the notch 26 at the right end are oppositely arranged in the left-right direction; one notch 26 in the lower end inner edge 2132 is provided at the left end of the lower end inner edge 2132 and is opposed to the one notch 26 at the left end of the upper end inner edge 2131 in the up-down direction, the other notch 26 in the lower end inner edge 2132 is provided at the right end of the lower end inner edge 2132 and is opposed to the other notch 26 at the right end of the upper end inner edge 2131 in the up-down direction, and the notch 26 at the left end of the lower end inner edge 2132 and the notch 26 at the right end are opposed to each other in the left-right direction.

The bobbin yoke 211 is provided with a baffle 22, a positioning boss 27 and two fixing posts 28 which respectively extend upwards from the upper surface of the bobbin yoke 211, and the stator winding 3 is wound between the baffle 22 and the bobbin shoe 213.

The baffle 22 is arranged at the inner end of the skeleton yoke 211, the baffle 22 comprises a body 221 extending upwards from the upper surface of the skeleton yoke 211 and three protrusions 222 extending upwards from the upper end surface of the body 221, and the three protrusions 222 are arranged at intervals in the left-right direction on the upper end surface of the body 1. The three protrusions 222 are a first protrusion, a second protrusion and a third protrusion in sequence along the left-right direction, wherein the distance between the first protrusion and the second protrusion is smaller than the distance between the second protrusion and the third protrusion. The three protrusions 222 are substantially trapezoidal when projected in the direction from inside to outside, and the width of the protrusion 222 in the left-right direction is gradually increased in the direction from bottom to top, in other words, the protrusion 222 is cut along a plane from top to bottom, and the cross section of the protrusion 222 is trapezoidal, the width of which in the left-right direction is gradually increased from bottom to top; also, the width of the first protrusion in the left-right direction is larger than the width of the third protrusion in the left-right direction and smaller than the width of the second protrusion in the left-right direction at the same height in the up-down direction.

The outer end at skeleton yoke portion 211 is established to location boss 27 and two fixed columns 28, and the left side and the right side of location boss 27 are equipped with a fixed column 28 respectively. The positioning boss 27 is an arc-shaped housing that is recessed from the outside inward to achieve positioning of the stator assembly within the pump casing.

In addition, a power supply puncture type rubber shell 41 is arranged on one of the 9 insulating frameworks 2, a central line puncture type rubber shell 42 is arranged on the other of the 9 insulating frameworks 2, and the insulating framework 2 with the puncture type rubber shell 4 and the puncture type rubber shell 4 thereon are integrally formed in an injection molding mode.

A method of preparing a stator assembly is described below, the method comprising the steps of:

s1, punching the stator punching sheet 110:

it can be understood that the stator punching sheet 110 can be punched on a silicon steel sheet or an electrical steel sheet by using punching equipment, and the stator punching sheet 110 punched each time is a single sheet;

s2, stacking the stator laminations 110 to form the stator bar 11 (as shown in fig. 3):

overlapping a plurality of stator laminations 110 and connecting adjacent stator laminations in a riveting or buckling manner to form a stator strip 11;

s3, integrally injection-molding the insulating skeleton 2 on the stator punching bar 11 (as shown in fig. 9):

respectively and integrally injection-molding 9 insulation frameworks 2 on the stator punching strips in a linear state, wherein the insulation frameworks 2 with the puncture-type rubber shells 4 are also integrally injection-molded;

s4, winding the stator winding 3 on the insulating framework 2;

and S5, connecting the stator punching strips 11 end to end into a circular ring shape to form a stator assembly (shown in figure 1):

the stator punching strip 11 matched with the insulating framework 2 is bent into a circular ring shape, and the head and the tail of the stator punching strip 11 are connected by adopting modes such as welding or buckling, it can be understood that the welding or the buckling of the stator punching strip 11 after the stator punching strip winds the circle can be realized on a certain tool, the tolerance requirement of the roundness in the iron core can be ensured, the strength of the circular forming can meet the requirement of a finished product drop test, and the quality of the finished product is higher.

It can be understood that through the insulating skeleton of integrative injection moulding on the stator punching bar that is in linear state, can improve stator core and insulating skeleton cooperation efficiency, improve insulating nature, reduce the defective rate, improve the working property of motor.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A pump, characterized in that the pump has a water inlet and a water outlet, the pump comprising:

the pump shell is internally provided with a pump cavity, and the water inlet and the water outlet are both communicated with the pump cavity;

an impeller disposed within the pump chamber;

the motor is connected with the impeller, the motor comprises a rotor and a stator assembly surrounding the rotor, the stator assembly comprises a stator core, an insulating framework and a stator winding, the stator core is in a circular shape formed by connecting stator strips end to end, the stator strips are formed by stacking at least two stator punching sheets, the insulating framework is matched with the stator core, the insulating framework is formed by integral injection molding on the outer surface of the stator strips when the stator strips are linear, the stator winding is wound on the surface of the insulating framework, the insulating framework comprises a base body, the base body is provided with an accommodating cavity through which the stator core penetrates, the base body comprises a framework yoke part, a framework tooth part connected with the inner end of the framework yoke part and a framework boot part connected with the inner end of the framework tooth part, and the upper end inner edge and the lower end inner edge of the framework boot part are arc surfaces recessed from inside to outside and are provided with notches, when insulating skeleton is moulded plastics to an organic whole, insulating skeleton's mould can be in breach department is fixed with the stator.

2. The pump of claim 1, wherein the backbone yoke, the backbone teeth, and the backbone shoes are integrally injection molded on the stator plunger when the stator plunger is linear, the stator windings being wound around surfaces of the backbone teeth.

3. The pump of claim 1, further comprising a diverter disc disposed at a first end of the pump housing, the diverter disc including a barrel closed at the first end and a flange extending radially outward from an outer periphery of a second end of the barrel, the flange coupled to the pump housing, the rotor disposed within the barrel, and the stator assembly surrounding the outer periphery of the barrel.

4. The pump of claim 3, further comprising a heating assembly including a heating plate and a heating tube, the heating plate being disposed at the second end of the pump housing and defining the pump chamber with the water diversion plate, the heating tube being disposed at an outer end face of the heating plate.

5. The pump of claim 4, wherein the pump chamber includes an impeller chamber in communication with the outlet port and an inlet chamber in communication with the inlet port, the impeller being disposed within the impeller chamber, the heating assembly being configured to heat water within the inlet chamber.

6. The pump of claim 4, wherein the water inlet is provided in a peripheral wall of the pump chamber, the water outlet is provided in the heating pan and the water outlet is located at a central position of the heating pan.

7. The pump of any one of claims 1-6, further comprising an inlet tube and an outlet tube, the inlet tube connected to the inlet port and the outlet tube connected to the outlet port.

8. The pump of claim 1, further comprising a water knock out plate disposed at a first end of the pump housing, the water knock out plate comprising a barrel closed at the first end and a flange extending radially outward from an outer periphery of a second end of the barrel, the flange coupled to the first end of the pump housing, the rotor disposed within the barrel, and a heating assembly surrounding the outer periphery of the barrel,

heating element includes heating plate and heating pipe, the heating plate is established the second end of pump case, the heating pipe is established the outer terminal surface of heating plate, the pump chamber includes the intercommunication the impeller chamber and the intercommunication of delivery port the intake chamber of water inlet, heating element is used for the heating water in the intake chamber, the impeller rotationally establishes in the impeller chamber, the water inlet is established the perisporium of pump chamber, the delivery port is established the heating plate just is located the central point of heating plate puts, the pump still includes inlet tube and outlet pipe, the inlet tube with the water inlet links to each other, the outlet pipe with the delivery port links to each other.

9. A dishwasher, characterized in that it comprises a pump according to any one of claims 1 to 8.