CN201478972U - Motor special for dish washer and water pump assembly using same - Google Patents
Motor special for dish washer and water pump assembly using same Download PDFInfo
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- CN201478972U CN201478972U CN2009201308777U CN200920130877U CN201478972U CN 201478972 U CN201478972 U CN 201478972U CN 2009201308777 U CN2009201308777 U CN 2009201308777U CN 200920130877 U CN200920130877 U CN 200920130877U CN 201478972 U CN201478972 U CN 201478972U
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Abstract
The utility model relates to a motor special for a dish washer and a water pump assembly using the motor. The motor special for the dish washer comprises a motor body; the motor body comprises a stator, a rotor matched with the stator and a middle cover fixedly connected with the stator; one end of the motor body is connected with a frequency-variable drive unit; the frequency-variable drive unit comprises a rear end cover and a frequency-variable drive controller; the rear end cover is fixedly connected with the middle cover; and the frequency-variable drive controller is contained between the rear end cover and the middle cover. By adopting the water pump assembly of the motor, the other end of the motor body is connected with a water pump; the water pump, the motor body and the frequency-variable drive unit form a three-section type connection structure; and the frequency-variable drive unit drives the water pump to work through the motor body and carries out frequency-variable speed adjustment to the motor body. The motor adopts a direct current brushless motor and comprises the motor body and the frequency-variable drive unit, and the water pump assembly formed by the motor and the water pump adopts a three-section type structure. The utility model has the advantages of reasonable and compact structure and strong practicability.
Description
Technical field
The utility model relates to the dishwasher field, more particularly, relates to a kind of dishwasher motor special and uses the water pump complement of this motor.
Background technology
The machine of the residual spot of use in dishwasher on automatic cleaning tableware, the life that can greatly be convenient for people to.In existing domestic bowl-washing, often adopt the dynamical system of asynchronous motor as feed pump, drive the feed pump water outlet to clean tableware according to the needs of washing mode.Yet adopt the dynamical system of asynchronous motor as the dishwasher water pump, have following shortcoming: weight is big, the life-span is short, fault is many, installation requirement is high, voltage range is little, and its speed adjusting performance is poor, efficient is low (50%～60%), with syndeton complexity, the poor reliability of feed pump.
For improve existing Induction Motor Structure complexity, weight is big, the defective that loss of electric machine power is bigger, China utility model patent CN 2827259Y discloses a kind of dishwasher that has motor rotor core heat dissipation weight-reducing structure, this utility model patent is by being provided with most heat dissipation weight-reducing holes on the electronics rotor core, guaranteeing under the constant situation of torque, alleviate rotor weight, reduced power loss, improved thermal diffusivity.Yet, the motor of this dishwasher is just by being provided with the weight that most heat dissipation weight-reducing holes alleviate asynchronous motor, do not improve the motor of dishwasher from structure and principle, therefore, complex structure, the weight that can not effectively solve existing asynchronous motor existence is big, installation requirement is high, and poor, the inefficient defective of speed adjusting performance, and not at improving with the syndeton of water pump.
The utility model content
One of the technical problems to be solved in the utility model is, adopt the dynamical system of asynchronous motor at above-mentioned existing dishwasher as water pump, defectives such as complex structure, speed adjusting performance is poor, efficient is low, a kind of dishwasher motor special is provided, employing has the dc brushless motor of variable frequency drive unit, it is simple and reasonable for structure, and can realize frequency control, and is energy-efficient.
Another technical problem to be solved in the utility model is, at defectives such as the syndeton complexity of above-mentioned existing asynchronous motor and water pump, poor reliability, a kind of water pump complement that uses above-mentioned dishwasher motor special is provided, described motor and water pump form the syllogic syndeton, and be simple in structure, reliable.
The technical scheme that the one technical problem that solves the utility model is adopted is: a kind of dishwasher motor special is provided, comprises motor body, described motor body comprises stator, the rotor that is equipped with stator and the middle cover of fixedlying connected with stator;
Be connected with variable frequency drive unit at motor body one end, described variable frequency drive unit comprises rear end cap and Frequency Drive Control device;
Described rear end cap is fixedlyed connected with middle cover, and described Frequency Drive Control device is contained between rear end cap and the middle cover.
In dishwasher motor special described in the utility model, the outside of described middle cover is provided with several asymmetrical first external lugs, described rear end cap be provided with accordingly several asymmetrical second external lugs and respectively with these several first external lug is relative connects, so that rear end cap is fixedlyed connected with middle cover.
In dishwasher motor special described in the utility model, inside three phase windings of described stator are provided with lead-out wire, and described lead-out wire is connected with the Frequency Drive Control device; Described variable frequency drive unit also comprises the power supply signal line component, and described power supply signal line component comprises power line and holding wire, and an end of described power line and holding wire connects the Frequency Drive Control device, and the other end passes motor external power supply and signal source respectively; Described Frequency Drive Control device becomes the power source conversion of power line input three phase mains and offers stator to produce the rotation of rotating magnetic field driving rotor, simultaneously, the frequency signal of its received signal line input also passes through the rotating speed of the frequency shift rotor of change stator rotating magnetic field.
In dishwasher motor special described in the utility model, described motor body further is provided with PCB lead-out wire assembly, described PCB lead-out wire assembly is fixedly connected on the stator, it comprises pcb board, terminal banjo, reaches described lead-out wire, one end of described lead-out wire is welded on the pcb board, other end splicing ear banjo;
Described Frequency Drive Control device comprises the driving PCB plate and is located at terminal on the driving PCB plate to combination hub, described driving PCB plate be provided be used to provide three-phase voltage to stator power supply unit and be used to change the control part that the input supply frequency is controlled rotor speed, described terminal is to a side of the combination hub described terminal banjo of pegging graft;
One end of the power line of described power supply signal line component is plugged in the opposite side of described terminal to combination hub corresponding to described power supply unit, the other end is provided with power input interface and passes the rear end cap external power supply, one end of described holding wire is connected on the described driving PCB plate corresponding to described control part, and the other end is provided with the control signal line interface and passes rear end cap outer signal source.
In dishwasher motor special described in the utility model, described Frequency Drive Control device is fixed in the rear end of middle cover and is contained in the rear end cap, the outside of described middle cover convexes with first portal structures, the front end of this first portal structures is provided with the first half holes, the outside of described rear end cap is provided with second portal structures corresponding to first portal structures of middle cover, the bottom of this second portal structures is provided with the second half holes and cooperates with respect to the first half holes and is formed with aperture of door, and the power line of described power supply signal line component and holding wire pass rear end cap by this aperture of door.
In dishwasher motor special described in the utility model, the magnetic material of described rotor adopts four, six or eight neodymium iron boron (NdFeB) magnetic tile structure; Described stator adopts the plastic plastic structure of three-phase nine groove silicon steel sheets; make by the silicon steel sheet that laminates; its middle part is provided with the mating holes that is used to install rotor; and electromagnetic wire is set around this mating holes; corresponding several boss that is provided with in the side of the pcb board of described PCB lead-out wire assembly, described electromagnetic wire is connected on these several boss, in addition; described stator both ends of the surface convex with the structure boss that is used to protect electromagnetic wire that adopts plastic cement to make, and its outside also is provided with earth terminal.
The technical scheme that its another technical problem that solves the utility model adopts is: a kind of water pump complement that adopts above-mentioned dishwasher motor special is provided, the other end at motor body is connected with water pump, described pump motor body and variable frequency drive unit constitute the syllogic syndeton, and described variable frequency drive unit drives pump working and motor body is carried out frequency control by motor body.
In water pump complement described in the utility model, described motor body also comprises the front end housing of fixedlying connected with stator, and described water pump comprises mount pad and is located at water pump body on the mount pad; Described front end housing is provided with several grabs, and described mount pad is provided with several draw-in grooves accordingly, and what described several grabs were corresponding respectively is placed in these several draw-in grooves, and mount pad is connected with the front end housing buckle, and water pump and motor body are fixedly connected.
In water pump complement described in the utility model, described rotor is provided with rotating shaft, and the front end of described rotating shaft is provided with connecting portion, and the mount pad of described water pump is provided with installation portion accordingly, and this connecting portion passes front end housing and described installation portion is connected; The rear end of described rotating shaft is provided with the auxiliary section, described rear end cap middle part is provided with the installation passage accordingly, this auxiliary section is passed middle cover, Frequency Drive Control device and is plugged in the described installation passage, by being installed, regulates passage rotating shaft countershaft, to adjust the installment state of motor and water pump with being connected of mount pad.
In water pump complement described in the utility model, described front end housing, middle cover, rear end cap are fire retardant plastic spare or metalwork, its end face is provided with the network structure that is used for loss of weight and heat radiation, and, the middle part of front end housing, middle cover is provided with and is used for bearings mounted bearing chamber, described bearing chamber is dodecagon, and its end is provided with perforation, passes front end housing and middle cover for described rotating shaft; The connecting portion of described rotating shaft is provided with screw thread, the corresponding screwed hole that is provided with of the installation portion of described mount pad, and the perforation that the connecting portion of described rotating shaft passes front end housing is threaded with installation portion; The middle part of described driving PCB plate is provided with through hole, and the through hole of the front end of described installation passage and driving PCB plate is corresponding to be provided with and to be plugged in this through hole, and the auxiliary section of described rotating shaft passes the perforation of middle cover, is plugged in to install in the passage.
Dishwasher motor special of the present utility model and use the beneficial effect of the water pump complement of this motor:
One, simple in structure, rationally, in light weight: the dishwasher motor special is a dc brushless motor, comprise motor body and variable frequency drive unit, the water pump complement that itself and water pump constitute is a three stage structure, by front end housing and rear end cap are set, realize water pump, motor body is fixedlyed connected with variable frequency drive unit, and variable frequency drive unit is contained in rear end cap and the middle cover, install reliable, in addition, also can regulate by the installation passage rotating shaft countershaft of rear end cap and the installment state of water pump, thus rational in infrastructure, compact, practical, can realize good installment state; Inversion control is carried out in position by back electromotive force inspection rotor, need not Hall element, and, be equipped with network structure on the front end housing of motor, middle cover and the rear end cap, both helped heat radiation, can effectively reduce weight again, thereby this dc brushless motor being in light weight, only is 1/3rd of asynchronous motor weight.
Two, frequency control, energy-efficient: adopt the dc brushless motor with variable frequency drive unit, can realize stepless time adjustment by frequency conversion, motor is worked in very wide velocity interval, and can normally move near best efficiency point, efficient is more than 75%.
Three, environment-friendly water-saving, washing are cleaner: because motor can frequency control, make motor keep efficient operation in very wide velocity interval, thereby dishwasher can be provided with multiple washing mode and selects arbitrarily: for example: normal washing mode, strong washing mode, washing mode etc. automatically, realize water saving by using different mode operations, and tableware has improved wash degree under strong washing mode, can fully satisfy consumer's user demand.
Four, wide input voltage range, intelligent function is strong: by variable frequency drive unit is set, the input voltage range of motor is 180VAC～240VAC, motor can normally move under constant rotational speed, exports constant power; And variable frequency drive unit checks that by back electromotive force the position of rotor carries out inversion control, can monitor whether operate as normal of motor in that dishwasher is in service, normally moves so that control dishwasher in real time.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structure cutaway view of the water pump complement of the utility model preferred embodiment;
Fig. 2 is the structure cutaway view of motor shown in Figure 1;
Fig. 3 is the perspective exploded view of motor shown in Figure 1;
Fig. 4 is the structural representation of stator shown in Figure 3;
Fig. 5 is the structural representation of pcb board lead-out wire assembly shown in Figure 3;
Fig. 6 is the structural representation of front end housing shown in Figure 3;
Fig. 7 is the structural representation of middle cover shown in Figure 3;
Fig. 8 is the structural representation of Frequency Drive Control device shown in Figure 3;
Fig. 9 is the structural representation of the described rear end cap of Fig. 3.
Embodiment
As shown in Figure 1, it is the schematic diagram of the water pump complement of the utility model preferred embodiment, improvements of the present utility model are the water pump complement that motor 10 and motor 10 and water pump 1 constitute, described motor 10 and water pump complement are used for dishwasher, the water pump complement that diagram only shows dishwasher motor special 10 and constitutes with water pump 1, other structure of dishwasher is similar to prior art, does not do at this and gives unnecessary details.Be illustrated in figure 2 as the cutaway view of motor among Fig. 1, Figure 3 shows that the three-dimensional exploded view of motor among Fig. 1, motor 10 of the present utility model is a dc brushless motor, dynamical system as water pump 1 drives water pump 1 work, and by frequency conversion realization stepless time adjustment, it comprises motor body 2 and the variable frequency drive unit 3 that is connected with motor body 2, water pump 1, the water pump complement that motor body 2 and variable frequency drive unit 3 constitute is the syllogic assembly structure, motor body 2 is fixedlyed connected with water pump 1, and variable frequency drive unit 3 drives water pump 1 work and motor body 2 is carried out frequency control by motor body 2.
Consult Fig. 1-3, described motor body 2 comprises: front end housing 21, stator 22, rotor 23, middle cover 24, bearing 251,252 and PCB lead-out wire assembly 26; Described front end housing 21 is located at the two ends of stator 22 respectively and is cooperated assembling with stator 22 with middle cover 24, and described rotor 23 is equipped with in the middle part of stator 22, and described PCB lead-out wire assembly 26 is installed on the stator 22.The assembling of motor body 2 is earlier pcb board lead-out wire assembly 26 to be fixedly connected on the stator 22 by self-tapping screw 28, after successively front end housing 21, bearing 251, stator 22, rotor 23, bearing 252 and middle cover 24 being cooperated assembling then, join screw 271 by four assemblings and be fastenedly connected with nut 272.
Consult Fig. 1-3, described variable frequency drive unit 3 is connected in the rear end of motor body 2, comprising: rear end cap 31, Frequency Drive Control device 32 and power line signal line component 33; Described rear end cap 31 is fixedlyed connected with the middle cover 24 of motor body 2, described Frequency Drive Control device 32 is built-in, be fixed in the rear end of the middle cover 24 of motor body 2 by self-tapping screw 34, the components and parts that are provided with on it are towards rear end cap 31 and be contained in this rear end cap 31, its middle part is provided with through hole 321, described rear end cap 31 middle parts are provided with installs passage 311, and the front end of described installation passage 311 and through hole 321 are corresponding to be provided with and to be plugged in this through hole 321; Described power supply signal line component 33 comprises power line 331 and holding wire 332, one end of described power line 331 is connected with Frequency Drive Control device 32, the other end is provided with power input interface 333, be used for external power supply, one end of described holding wire 332 is connected with Frequency Drive Control device 32, the other end is provided with control signal line interface 334, is used for the outer signal source; In the present embodiment, by form aperture of door 35 between rear end cap 31 and middle cover 24, this power line 331 and holding wire 332 pass this aperture of door 35 and are used for external power supply and signal source (not shown) respectively; In addition, described rear end cap 31 is oppositely arranged three the asymmetrical second external lugs 310 and the first external lug 240 with the outside of the middle cover 24 of motor body 2, and join screw 361 by three assemblings and be fastenedly connected with nut 362, described variable frequency drive unit 3 is assembled mutually with motor body 2.
Consult Fig. 1-3, described water pump 1 is connected in the front end of motor body 2, comprising: mount pad 13 and be located at water pump body 14 on the mount pad 13; The front end housing 21 of described motor body 2 is provided with four plastic cement grabs 210, and described mount pad 13 is provided with four draw-in grooves 130 accordingly, being placed in these four draw-in grooves 130 of this four grab 210 correspondences, and described water pump 1 is assembled mutually with motor body 2.In addition, described rotor 23 is provided with rotating shaft 230, the front end of rotating shaft 230 is connected with water pump 1, the rear end is plugged in the installation passage 311 at rear end cap 31 middle parts of described variable frequency drive unit 3, installation passage 311 by rear end cap 31 is regulated rotating shaft 230, makes motor 10 and water pump 1 have good installment state.In the present embodiment, the front end of described rotating shaft 230 is provided with connecting portion 231, connecting portion 231 is provided with screw thread, described mount pad 13 is provided with installation portion 131 accordingly, be provided with screwed hole in the installation portion 131, the connecting portion 231 of described rotating shaft 230 passes front end housing 21 and is threaded with the installation portion 131 of water pump 1; The rear end of described rotating shaft 230 is provided with auxiliary section 232, this auxiliary section 232 pass middle cover 24 and the installation passage 311 of the rear end cap 31 that is plugged in, by this passage 311 rotating shafts 230 are installed, being threaded between connecting portion 232 that can countershaft 230 and the installation portion 131 of mount pad 13 regulated, and makes motor 10 and water pump 1 have good installment state.
Dishwasher motor special of the present utility model and use the operation principle of the water pump complement of this motor: described variable frequency drive unit 3 drives water pumps 1 work and motor body 2 is carried out frequency control by motor body 2.Specifically, described rotor 23 is a permanent magnet, for example: its magnetic material adopts four, six or eight neodymium iron boron (NdFeB) magnetic tile structure, it is provided with described rotating shaft 230 and is connected with water pump 1, described stator 22 inner three phase windings are provided with lead-out wire 29, described lead-out wire 29 is connected with Frequency Drive Control device 32, the power line 331 of described power supply signal line component 33 and an end of holding wire 332 connect Frequency Drive Control device 32, the other end passes motor 10 external power supply and signal source respectively, described Frequency Drive Control device 32 becomes the power source conversion of power line 331 inputs three phase mains and offers stator 22 to produce 23 rotations of rotating magnetic field driving rotor, to drive water pump 1 work, simultaneously, the frequency signal of its received signal line 332 inputs also passes through the rotating speed of the frequency shift rotor 23 of change stator 22 rotating magnetic fields, to regulate the water yield of water pump 1.
Consult Fig. 4-9, details are as follows for the element of described motor body 2 and variable frequency drive unit 3 and correlation:
Be illustrated in figure 4 as the structural representation of stator, described stator 22 adopts the plastic plastic structure of three-phase nine groove silicon steel sheets, is made by the silicon steel sheet 220 that laminates, and the middle part of stator 22 is provided with mating holes 221, is used to install rotor 23; Electromagnetic wire 222 is set around this mating holes 221, and its both ends of the surface convex with the structure boss 223 that is used to protect electromagnetic wire 222, this structure boss 223 adopts plastic cement to make; Its place, four diagonal angles is provided with the installing hole 224 for front end housing 21 and middle cover 24 assembling connection usefulness respectively; Its outside is provided with earth terminal 225, and this earth terminal 225 adopts rivet 229 to be riveted on this silicon steel sheet that laminates 220.What deserves to be mentioned is that described stator 22 is provided with the location structure that is used to install PCB lead-out wire assembly 26, in the present embodiment, this location structure comprises two groups of symmetrically arranged reference columns 226, screw column 227, and the middle part of described screw column 227 is provided with screwed hole 228.
Be illustrated in figure 5 as the structural representation of pcb board lead-out wire assembly, described pcb board lead-out wire assembly 26 is fixedly connected on the stator 22, is used to draw stator 22 inner three phase windings, and it comprises pcb board 261, terminal banjo 262 and described lead-out wire 29.Described pcb board 261 is provided with the location hole 263 and the installing hole 264 of two groups of symmetries, described location hole 263 is provided with and is arranged on the reference column 226 corresponding to the reference column on the stator 22 226, screw column 227 corresponding settings on described installing hole 264 and the stator 22, by self-tapping screw 28 with the screwed hole 228 corresponding connections on this installing hole 264 and the screw column 227, pcb board 261 is fixedly connected on the described stator 22; Described pcb board 261 can be the existing pcb board of different shape, its side is provided with three boss 265, and the electromagnetic wire 222 of described stator 22 is welded on these three boss 265, is undertaken by these three boss 265, to electrically connect, draw by this lead-out wire 29 with lead-out wire 29; One end of described lead-out wire 29 is welded on the pcb board 261, other end splicing ear banjo 262, described terminal banjo 262 is used to connect Frequency Drive Control device 32, make stator 22 be connected with Frequency Drive Control device 32 by pcb board lead-out wire assembly 26, be understandable that, described lead-out wire 29 except that connect by pcb board 261 draw, also can make the injection moulding contact pin or the forms such as spring leaf of inlaying are drawn the back and are connected with Frequency Drive Control device 32.
Be illustrated in figure 6 as the structural representation of front end housing, described front end housing 21 is a fire retardant plastic spare, is equipped with stator 22, and its end face is a network structure 211, helps loss of weight and heat radiation; Its middle part is provided with the bearing chamber 212 of dodecagon, be used to install bearing 251, adopt to be dodecagonal bearing chamber installation bearing 251, make that the installation of bearing is reliable, and the end of bearing chamber 212 is provided with perforation (not shown), is used for passing front end housing 21 for the rotating shaft 230 of described rotor 23; Its place, four diagonal angles is provided with the reference column 213 that connects stator 22 usefulness for assembling respectively, described four reference columns 213 protrude towards stator 22 and are provided with, insert four installing holes 224 of stator 22 from the front end of stator 22 respectively, so that front end housing 21 is cooperated assembling with stator 22, and, the middle part of reference column 213 is provided with through hole 214, is used for front end housing 21 being fixedlyed connected with stator 22 after screw 271 wears for assembling; In addition, described four the plastic cement grabs 210 of assembling connection water pump 1 usefulness that supply are set on its front end face.
Be illustrated in figure 7 as the structural representation of middle cover, described middle cover 24 is a fire retardant plastic spare, is equipped with stator 22, and its end face is a network structure 241, helps loss of weight and heat radiation; Its middle part is provided with the bearing chamber (not shown) of dodecagon, is used to install bearing 252; And the end of bearing chamber is provided with perforation 242, is used for passing middle cover 24 for the rotating shaft 230 of described rotor 23; Its place, four diagonal angles is provided with the reference column 243 that connects stator 22 usefulness for assembling respectively, described four reference columns 243 protrude towards stator 22 and are provided with, insert four installing holes 224 of stator 22 from the rear end of stator 22 respectively, so that middle cover 24 is cooperated assembling with stator 22, and, the middle part of reference column 243 is provided with through hole 244, is used for middle cover 24 being fixedlyed connected with stator 22 after screw 271 wears for assembling; What deserves to be mentioned is, the rear end face of middle cover 24 is provided with the fixed structure that is used to install Frequency Drive Control device 32, in the present embodiment, this fixed structure is two groups and is symmetrical arranged reference column 2451, grab 2452 and screw column 2453 that the middle part of described screw column 2453 is provided with screwed hole 2454; The outside of middle cover 24 convexes with first portal structures 246, the front end extension of this first portal structures 246 is provided with coordinating block 2460, the front end of coordinating block 2460 is provided with the first half hole 2461 and two joint pins 2462, in the present embodiment, described the first half holes 2461 are the semicircle arcuation, are used to form power supply source holding wire assembly 33 and pass.In addition, the middle part of described three asymmetrical first external lug 240, the first external lugs 240 of the arranged outside of middle cover 24 is provided with screwed hole 2401, is used for middle cover 24 being fixedlyed connected with rear end cap 31 after screw 361 wears for assembling.
Be illustrated in figure 8 as the structural representation of Frequency Drive Control device, described Frequency Drive Control device 32 comprises driving PCB plate 320, is located at terminal on the driving PCB plate 320 to combination hub 322; The middle part of described driving PCB plate 320 is provided with described through hole 321, is used for pegging graft for the installation passage 311 of rear end cap 31; The grab 2452 corresponding both sides that are connected in driving PCB plate 320 of described middle cover 24, simultaneously, described driving PCB plate 320 is provided with two groups of location holes 323 and installing hole 324, reference column 2451 on described location hole 323 and the middle cover 24 is corresponding to be provided with and to be arranged on this reference column 2451, the screw column 2453 corresponding settings of described installing hole 324 and middle cover 24, by self-tapping screw 34 with the screwed hole 2454 corresponding connections on this installing hole 324 and the screw column 2453, driving PCB plate 320 is fixedly connected on the described middle cover 24; In addition, also be provided with two connecting holes 325 of the holding wire 332 that is used to connect power line signal line component 33 on the described driving PCB plate 320.Described terminal is used for pegging graft for the terminal banjo 262 of pcb board lead-out wire assembly 26 and the power line 331 of power line signal line component 33 to combination hub 322, described terminal banjo 262 is plugged in the front end of this terminal to combination hub 322, the power line 331 of described power line signal line component 33 is plugged in the rear end of this terminal to combination hub 322, other components and parts of not shown Frequency Drive Control device 32 all can pass through existing techniques in realizing.
Consult Fig. 2 and Fig. 9 simultaneously, described rear end cap 31 is a fire retardant plastic spare, is equipped with middle cover 24, and its end face is a network structure 312, helps loss of weight and heat radiation; Be provided with accommodation space 313 in it, be used to accommodate Frequency Drive Control device 32 and power line signal line component 33; Its outside is provided with second portal structures 316 corresponding to first portal structures 246 of middle cover 24, the front end of this second portal structures 316 is provided with mating groove 3160 corresponding to first portal structures 246, the bottom of mating groove 3160 is provided with the second half holes 3161 with respect to the first half holes 2461, this the second half hole 3161 is semicircular arc, be provided with two connecting holes (not shown) corresponding to two joint pins 2462, be plugged in two connecting holes by these two joint pins, 2462 correspondences, described the first half holes 2461 cooperate with the second half holes 3161 and form described aperture of door 35, pass for power supply signal line component 33; The outside of described rear end cap 31 is provided with described three second external lugs 310 corresponding to three first external lugs 240 of middle cover 24, the middle part of the second external lug 310 is provided with screwed hole (not shown), described assembling screw 361 correspondences are passed the screwed hole 2401 of the first external lug 240 of the screwed hole of the second external lug 310 and middle cover 24, and fastening with nut 362, so that rear end cap 31 and middle cover 24 are fastenedly connected; What deserves to be mentioned is, the middle part of described rear end cap 31 is provided with described installation passage 311, the through hole 321 of the front end of this installation passage 311 and driving PCB plate 320 is corresponding to be provided with and to be plugged in this through hole 321, the rotating shaft 230 of described rotor 23 passes the perforation 242 of middle cover 24, be plugged in and install in the passage 311, by this described rotating shaft 230 of passage 311 scalable is installed, is used to connect water pump.
As from the foregoing, the utility model adopts variable frequency drive unit 3 to drive water pump 1 work and motor body 2 is carried out frequency control by motor body 2; Wherein, Frequency Drive Control device 32 is important control assembly, the driving PCB plate 320 of Frequency Drive Control device 32 is provided with power supply unit and control part (not shown), the power line 331 of described power supply signal line component 33 is connected to this power supply unit, be used to provide power supply, its holding wire 332 is connected to this control part, is used for the frequency in and out signal, power supply unit is used to provide the stator of three phase mains to motor, and the control part then supply frequency of conversion input on demand comes the rotating speed of control rotating shaft 230.Power supply unit can direct current input or with the alternating current input, if input is that alternating current must change into direct current through transducer earlier, must earlier direct voltage be changed into three-phase voltage by inverter before direct current input or alternating current input will be imported motor no matter be.In the present embodiment, described power supply unit is provided with transducer and inverter, the input of employing alternating current, power line 331 by power line signal line component 33 connects this AC power and offers power supply unit, input voltage range is 180VAC～240VAC, earlier change into direct voltage then through transducer, change into three-phase voltage by inverter again and come drive motors, the circuit structure of above-mentioned transducer and inverter can pass through existing techniques in realizing, in general, described inverter comprises six power transistors (Q1～Q6), be divided into upper arm (Q1, Q3, Q5) and underarm (Q2, Q4, Q6), be used to connect three phase windings of stator 22, the output three-phase voltage is to stator 22 3 phase windings, after stator 22 3 phase windings feed three-phase voltage, to produce a rotating magnetic field, because the rotor 23 of dc brushless motor is a permanent magnet, change the charging direction of three-phase stator winding successively by inverter, the alternating magnetic field cutting rotor winding that this charging winding produces, thereby produce induced current in the rotor winding, rotor magnet will produce electromagnetic force under the effect of stator rotating magnetic field, thereby form electromagnetic torque in rotating shaft, rotating shaft 230 is rotated, and is used to drive water pump 1 work.Simultaneously, the holding wire 331 of power line signal line component 33 connects signal source provides frequency signal to control part, control part then provide described six power transistors of PWM (pulse width modulation) decision (switching frequency of Q1～Q6) and inverter commutation opportunity control rotating shaft rotating speed, control part adopts frequency conversion speed closed loop control mode, the incoming frequency scope (110HZ-160HZ) of control signal line interface 334, the control part operational speed range is at (2200RPM-3200RPM), frequency and speed corresponding relation are (frequency 1HZ corresponding speed 20RPM), and carry out inversion control by back electromotive force detection rotor position, thereby motor is carried out frequency control by control part, can change the water yield of water pump 1, can make motor keep efficient operation in very wide velocity interval, can make dishwasher according to the water yield of water pump 1 multiple washing mode is set again selects arbitrarily, what deserves to be mentioned is, adopt the principle of the position of back electromotive force detection rotor to be, at any time in three phase windings of stator, the energising of two phase windings is arranged, one phase winding no power, this cold stator winding cutting rotor magnetic field produces induced electromotive force, obtain the sense of current by more cold winding both end voltage size, judge that by right-hand rule the rotor field situation obtains rotor-position again, adopt the position of back electromotive force detection rotor, need not to install Hall element, further simplify the structure.The components and parts of above-mentioned Frequency Drive Control device 32 and circuit thereof connect can pass through existing techniques in realizing, can realize driving and frequency control to motor.
In addition, what deserves to be mentioned is, described front end housing 21, middle cover 24, rear end cap 31 can adopt metal material to make; The version that described motor body 2 and variable frequency drive unit 3 can be designed to be separated, by pcb board lead-out wire assembly inside three phase windings of motor body 2 are drawn the back and be connected with the Frequency Drive Control device 32 of variable frequency drive unit 3, the electric connection that can realize variable frequency drive unit 3 and motor body 2 can drive with frequency control by 3 pairs of motor bodies 2 of variable frequency drive unit and get final product; The inside three phase winding lead-out wires of motor body 2 except that by connect with pcb board draw, the also forms such as spring leaf that can make the injection moulding contact pin or inlay.
In sum, dishwasher motor special of the present utility model and use the water pump complement of this motor to have following advantage: at first, simple in structure, rationally, in light weight: the dishwasher motor special is a dc brushless motor, comprise motor body and variable frequency drive unit, the water pump complement that itself and water pump constitute is a three stage structure, by front end housing and rear end cap are set, realize water pump, motor body is fixedlyed connected with variable frequency drive unit, and variable frequency drive unit is contained in rear end cap and the middle cover, install reliably, in addition, also can regulate by the installation passage rotating shaft countershaft of rear end cap and the installment state of water pump, thereby it is rational in infrastructure, compactness, practical; Inversion control is carried out in position by back electromotive force inspection rotor, need not Hall element, and, be equipped with network structure on the front end housing of motor, middle cover and the rear end cap, both helped heat radiation, can effectively reduce weight again, thereby this dc brushless motor being in light weight, only is 1/3rd of asynchronous motor weight; Secondly, frequency control, energy-efficient: adopt the dc brushless motor with variable frequency drive unit, can realize stepless time adjustment by frequency conversion, motor is worked in very wide velocity interval, and can normally operation near best efficiency point, efficient be more than 75%; Once more, environment-friendly water-saving, washing are cleaner: because motor can frequency control, make motor keep efficient operation in very wide velocity interval, thereby dishwasher can be provided with multiple washing mode and selects arbitrarily: for example: normal washing mode, strong washing mode, washing mode etc. automatically, realize water saving by using different mode operations, and tableware has improved wash degree under strong washing mode, can fully satisfy consumer's user demand; In addition, wide input voltage range, intelligent function is strong: by variable frequency drive unit is set, the input voltage range of motor is 180VAC～240VAC, motor can be under constant rotational speed normally operation, export constant power; And variable frequency drive unit checks that by back electromotive force the position of rotor carries out inversion control, can monitor whether operate as normal of motor in that dishwasher is in service, normally moves so that control dishwasher in real time.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (10)
1. a dishwasher motor special is characterized in that, comprises motor body (2), and described motor body (2) comprises stator (22), the rotor (23) that is equipped with stator (22) and the middle cover (24) of fixedlying connected with stator (22);
Be connected with variable frequency drive unit (3) at motor body (2) one ends, described variable frequency drive unit (3) comprises rear end cap (31) and Frequency Drive Control device (32);
Described rear end cap (31) is fixedlyed connected with middle cover (24), and described Frequency Drive Control device (32) is contained between rear end cap (31) and the middle cover (24).
2. dishwasher motor special according to claim 1, it is characterized in that, the outside of described middle cover (24) is provided with several asymmetrical first external lugs (240), described rear end cap (31) be provided with accordingly several asymmetrical second external lugs (310) and respectively with this several relative connection of first external lug (240), so that rear end cap (31) is fixedlyed connected with middle cover (24).
3. dishwasher motor special according to claim 1 is characterized in that, inside three phase windings of described stator (22) are provided with lead-out wire (29), and described lead-out wire (29) is connected with Frequency Drive Control device (32); Described variable frequency drive unit (3) also comprises power supply signal line component (33), described power supply signal line component (33) comprises power line (331) and holding wire (332), one end of described power line (331) and holding wire (332) connects Frequency Drive Control device (32), and the other end passes motor external power supply and signal source respectively.
4. dishwasher motor special according to claim 3, it is characterized in that, described motor body (2) further is provided with PCB lead-out wire assembly (26), described PCB lead-out wire assembly (26) is fixedly connected on the stator (22), it comprises pcb board (261), terminal banjo (262), reaches described lead-out wire (29), one end of described lead-out wire (29) is welded on the pcb board (261), other end splicing ear banjo (262);
Described Frequency Drive Control device (32) comprises driving PCB plate (320) and is located at terminal on the driving PCB plate (320) to combination hub (322), described driving PCB plate (320) be provided be used to provide three-phase voltage to stator (22) power supply unit and be used for the control part that conversion input supply frequency is controlled rotor (23) rotating speed, described terminal is to a side of combination hub (322) the described terminal banjo (262) of pegging graft;
One end of the power line (331) of described power supply signal line component (33) is plugged in the opposite side of described terminal to combination hub (322) corresponding to described power supply unit, the other end is provided with power input interface (333) and passes rear end cap (31) external power supply, one end of described holding wire (332) is connected on the described driving PCB plate (320) corresponding to described control part, and the other end is provided with control signal line interface (334) and passes rear end cap (31) outer signal source.
5. according to claim 3 or 4 described dishwasher motor specials, it is characterized in that, described Frequency Drive Control device (32) is fixed in the rear end of middle cover (24) and is contained in the rear end cap (31), the outside of described middle cover (24) convexes with first portal structures (246), the front end of this first portal structures (246) is provided with the first half holes (2461), the outside of described rear end cap (31) is provided with second portal structures (316) corresponding to first portal structures (246) of middle cover (24), the bottom of this second portal structures (316) is provided with the second half holes (3161) and cooperates with respect to the first half holes (2461) and is formed with aperture of door (35), and the power line (331) and the holding wire (332) of described power supply signal line component (33) pass rear end cap (31) by this aperture of door (35).
6. dishwasher motor special according to claim 3 is characterized in that, the magnetic material of described rotor (23) adopts four, six or eight neodymium iron boron (NdFeB) magnetic tile structure; Described stator (22) adopts the plastic plastic structure of three-phase nine groove silicon steel sheets; make by the silicon steel sheet that laminates (220); its middle part is provided with the mating holes (221) that is used to install rotor (23); and electromagnetic wire (222) is set around this mating holes (221); corresponding several boss (265) that are provided with in the side of the pcb board (261) of described PCB lead-out wire assembly (26); described electromagnetic wire (222) is connected on these several boss (265); in addition; described stator (22) both ends of the surface convex with the structure boss (223) that is used to protect electromagnetic wire (222) that adopts plastic cement to make, and its outside also is provided with earth terminal (225).
7. water pump complement that uses motor as claimed in claim 1, it is characterized in that, the other end at motor body (2) is connected with water pump (1), described water pump (1), motor body (2) and variable frequency drive unit (3) constitute the syllogic syndeton, and described variable frequency drive unit (3) drives water pump (1) work and motor body (2) is carried out frequency control by motor body (2).
8. water pump complement according to claim 7 is characterized in that, described motor body (2) also comprises the front end housing (21) of fixedlying connected with stator (22), and described water pump (1) comprises mount pad (13) and is located at water pump body (14) on the mount pad (13); Described front end housing (21) is provided with several grabs (210), described mount pad (13) is provided with several draw-in grooves (130) accordingly, what described several grabs (210) were corresponding respectively is placed in these several draw-in grooves (130), mount pad (13) is connected with front end housing (21) buckle, and water pump (1) is fixedly connected with motor body (2).
9. according to claim 7 or 8 described water pump complements, it is characterized in that, described rotor (23) is provided with rotating shaft (230), the front end of described rotating shaft (230) is provided with connecting portion (231), the mount pad (13) of described water pump (1) is provided with installation portion (131) accordingly, and this connecting portion (231) passes front end housing (21) and is connected with described installation portion (131); The rear end of described rotating shaft (230) is provided with auxiliary section (232), described rear end cap (31) middle part is provided with accordingly installs passage (311), this auxiliary section (232) is passed middle cover (24), Frequency Drive Control device (32) and is plugged in the described installation passage (311), regulates with being connected of mount pad (13) by passage (311) rotating shaft (230) countershaft (230) is installed.
10. water pump complement according to claim 9, it is characterized in that, described front end housing (21), middle cover (24), rear end cap (31) are fire retardant plastic spare or metalwork, its end face is provided with the network structure that is used for loss of weight and heat radiation, and the middle part of front end housing (21), middle cover (24) is provided with and is used for bearings mounted bearing chamber, and described bearing chamber is dodecagon, its end is provided with perforation, passes front end housing (21) and middle cover (24) for described rotating shaft (230); The connecting portion (231) of described rotating shaft (230) is provided with screw thread, and the perforation that the corresponding screwed hole that is provided with of installation portion (131) of described mount pad (13), the connecting portion (231) of described rotating shaft (230) pass front end housing (21) is threaded with installation portion (131); The middle part of described driving PCB plate (320) is provided with through hole (321), the through hole (321) of the front end of described installation passage (311) and driving PCB plate (320) is corresponding to be provided with and to be plugged in this through hole (321), the auxiliary section (232) of described rotating shaft (230) passes the perforation of middle cover (24), is plugged in to install in the passage (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201308777U CN201478972U (en) | 2009-04-20 | 2009-04-20 | Motor special for dish washer and water pump assembly using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201308777U CN201478972U (en) | 2009-04-20 | 2009-04-20 | Motor special for dish washer and water pump assembly using same |
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| Publication Number | Publication Date |
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| CN201478972U true CN201478972U (en) | 2010-05-19 |
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| CN2009201308777U Expired - Lifetime CN201478972U (en) | 2009-04-20 | 2009-04-20 | Motor special for dish washer and water pump assembly using same |
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| CN102037633A (en) * | 2009-04-20 | 2011-04-27 | 深圳拓邦股份有限公司 | Special motor for dishwasher and water pump assembly using it |
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| CN103216452A (en) * | 2013-04-25 | 2013-07-24 | 常州雷利电机科技有限公司 | Draining pump |
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| CN104929951A (en) * | 2015-06-05 | 2015-09-23 | 东莞市弘鼎机电有限公司 | Energy-saving DC variable frequency water pump and control method thereof |
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| CN106208530A (en) * | 2015-05-04 | 2016-12-07 | 建准电机工业股份有限公司 | Motor with a stator having a stator core |
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| CN102508023A (en) * | 2011-11-14 | 2012-06-20 | 美的集团有限公司 | Signal detection circuit and frequency detection method for dish-washing machine shunt valve |
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| CN104467296A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Integrated variable frequency motor |
| CN105990936A (en) * | 2015-02-09 | 2016-10-05 | 建准电机工业股份有限公司 | Motor with a stator having a stator core |
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| CN106208530A (en) * | 2015-05-04 | 2016-12-07 | 建准电机工业股份有限公司 | Motor with a stator having a stator core |
| CN104929951A (en) * | 2015-06-05 | 2015-09-23 | 东莞市弘鼎机电有限公司 | Energy-saving DC variable frequency water pump and control method thereof |
| CN105048658A (en) * | 2015-06-29 | 2015-11-11 | 佛山市威灵洗涤电机制造有限公司 | Motor, washing pump, dish washer and method for manufacturing motor |
| CN108223393A (en) * | 2018-01-30 | 2018-06-29 | 佛山市顺德区美的洗涤电器制造有限公司 | For the washing pump of dish-washing machine and with its dish-washing machine |
| CN108661922A (en) * | 2018-05-11 | 2018-10-16 | 克奥兹泵业（深圳）有限公司 | centrifugal water pump and its driving method |
| CN109222833A (en) * | 2018-10-31 | 2019-01-18 | 芜湖广盈实业有限公司 | A kind of dish-washing machine reinforced fixed structure |
| CN109222833B (en) * | 2018-10-31 | 2024-02-13 | 芜湖广盈实业有限公司 | Reinforced fixing structure of dish washer |
| CN113106707A (en) * | 2021-04-13 | 2021-07-13 | 无锡好力泵业有限公司 | Washing machine frequency conversion drain pump and washing machine |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN TOPBAND CO.,LTD Free format text: FORMER NAME: SHENZHEN TOPBAND ELECTRONICS + TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 4 building, B District, Qinghua Research Institute, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong, 518057 Patentee after: Shenzhen Topband Co., Ltd. Address before: 4 building, B District, Qinghua Research Institute, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong, 518057 Patentee before: Tuobang Electronic Science and Technology Co., Ltd., Shenzhen City |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090420 |
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| RGAV | Abandon patent right to avoid regrant |