CN204794788U - Range hood and be used for range hood's AC motor drive circuit - Google Patents
Range hood and be used for range hood's AC motor drive circuit Download PDFInfo
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- CN204794788U CN204794788U CN201520497898.8U CN201520497898U CN204794788U CN 204794788 U CN204794788 U CN 204794788U CN 201520497898 U CN201520497898 U CN 201520497898U CN 204794788 U CN204794788 U CN 204794788U
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Abstract
The utility model discloses a range hood and be used for range hood's AC motor drive circuit, wherein, this circuit includes: AC motor, it is behind AC motor's the starting winding series connection start -up electric capacity, parallelly connected with AC motor's first operating winding, change over switch, change over switch's first end is connected in the first end of power, and change over switch's second end and third end are connected respectively in the both ends that start electric capacity, the switch element is connected between the second end and first node of power for the break -make of circuit between the second of control source end and the first node, wherein, first node is the connected node of starting winding and first operating winding, the controller is connected with change over switch and switch element electricity respectively for the on off state of control change over switch and switch element. The utility model provides a transfer when wasing the impeller technical problem that used motor -drive circuit structure is complicated in the correlation technique through the control motor is positive and negative.
Description
Technical field
The utility model relates to appliance field, in particular to a kind of range hood and the AC electric machine driving circuit for range hood.
Background technology
The range hood that current market uses, internal impeller is vulnerable to fume pollution most, for this fume pollution, the method that most employing water rinses is removed, and such as hot water or hot steam rinse, in addition when winter temperature is lower, cold water is not enough to clean up, if use hot water, heater must be increased, so, not only increase parts, and add parts for maintenance rate, and water flushing easily makes impeller get rusty, or produce waste water.
Propose in correlation technique and carry out positive and negative transferring by regular alternating current motor or direct current machine and get rid of except impeller oils the method for fat, but motor-drive circuit complex structure used, wiring is more, and to many-contact relay be used, the sequencing of each actuating of relay is not specified yet, cause easily occurring relay contact generation electric arc in actual use, thus make relay contact weld adhesion, cause fault.
For above-mentioned problem, at present effective solution is not yet proposed.
Utility model content
The utility model embodiment provides a kind of range hood and the AC electric machine driving circuit for range hood, when cleaning impeller by control motor positive and inverse at least to solve in correlation technique, and the baroque technical problem of motor-drive circuit used.
According to an aspect of the utility model embodiment, provide a kind of AC electric machine driving circuit for range hood, this AC electric machine driving circuit comprises: alternating current machine, after the startup windings in series start-up capacitance of alternating current machine, in parallel with the first Working winding of alternating current machine; Change over switch, the first end of change over switch is connected to the first end of power supply, second end of change over switch and the 3rd end are connected to the two ends of start-up capacitance, for the first end and change over switch of connecting change over switch the second end or connect the first end of change over switch and the 3rd end of change over switch; Switch element, is connected between the second end of power supply and first node, and for controlling the break-make of circuit between the second end of power supply and first node, wherein, first node is the connected node starting winding and the first Working winding; Controller, is electrically connected with change over switch and switch element respectively, for controlling the on off state of change over switch and switch element.
The further improvement of the utility model to technique scheme is, change over switch be following any one: double-contact relay and two-way switch, wherein, when change over switch is double-contact relay, the common of double-contact relay is connected to the first end of power supply, the normally opened contact of double-contact relay and normally-closed contact are connected to the two ends of start-up capacitance, and the first coil contact of double-contact relay is connected with controller.
The further improvement of the utility model to technique scheme is, between controller and the first coil contact of double-contact relay, also be in series with the first driver element, for driving double-contact relay to switch between normally opened contact and normally-closed contact according to the output of controller.
The further improvement of the utility model to technique scheme is, first driver element comprises the first triode, the base stage connection control device of the first triode, and collector electrode connects the first coil contact of double-contact relay, emitter grounding, the second coil contact of double-contact relay connects power supply; Or the base stage connection control device of the first triode, emitter-base bandgap grading connects the first coil contact of double-contact relay, and collector electrode connects power supply, the second coil contact ground of double-contact relay.
The further improvement of the utility model to technique scheme is, the first Working winding is the operation winding of alternating current machine, or one of them winding element be separated into by the operation winding of alternating current machine by least one tap.
The further improvement of the utility model to technique scheme is, switch element comprises at least one relay, and the quantity of the relay that switch element comprises is identical with the quantity of the winding element that the operation winding of alternating current machine is separated into.
The further improvement of the utility model to technique scheme is, when the operation winding of alternating current machine is separated into the first Working winding, when the second Working winding and the 3rd Working winding, switch element comprises the second relay, 3rd relay and the 4th relay, wherein, second relay, the common of the 3rd relay and the 4th relay is all connected to the second end of power supply, the normally opened contact of the second relay is connected to first node, the normally opened contact of the 3rd relay is connected to first node by the second Working winding, the normally opened contact of the 4th relay is connected to first node by the 3rd Working winding and the second Working winding, second relay, first coil contact of the 3rd relay and the 4th relay is connected to controller.
The further improvement of the utility model to technique scheme is, at controller and between the second relay, the 3rd relay and the 4th relay, also be in series with the second driver element, the 3rd driver element and four-wheel drive unit respectively, wherein, the second driver element, the 3rd driver element and four-wheel drive unit are respectively used to drive the second relay, the 3rd relay and the 4th relay to switch between normally opened contact and normally-closed contact respectively according to the output of controller.
The further improvement of the utility model to technique scheme is, second driver element comprises the second triode, 3rd driver element comprises the 3rd triode, four-wheel drive unit comprises the 4th triode, wherein: the base stage connection control device of the second triode, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the second relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of the second relay for emitter-base bandgap grading and collector electrode; And/or the 3rd base stage connection control device of triode, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the 3rd relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of the 3rd relay for emitter-base bandgap grading and collector electrode; And/or the 4th base stage connection control device of triode, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the 4th relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of the 4th relay for emitter-base bandgap grading and collector electrode.
The further improvement of the utility model to technique scheme is, between the second Working winding and first node, is in series with protective device.
The further improvement of the utility model to technique scheme is, this AC electric machine driving circuit also comprises: switch and/or button, controller is used for, according to the manual operation to switch and/or button, producing control signal, controls the on off state of change over switch and switch element.
According to another aspect of the utility model embodiment, provide a kind of range hood, comprise the AC electric machine driving circuit for range hood described in any one technical scheme above-mentioned.
In the utility model embodiment, adopt AC electric machine driving circuit, this AC electric machine driving circuit comprises: alternating current machine, after the startup windings in series start-up capacitance of alternating current machine, in parallel with the first Working winding of alternating current machine; Change over switch, change over switch, the first end of change over switch is connected to the first end of power supply, second end of change over switch and the 3rd end are connected to the two ends of start-up capacitance, for the first end and change over switch of connecting change over switch the second end or connect the first end of change over switch and the 3rd end of change over switch; Switch element, is connected between the second end of power supply and first node, and for controlling the break-make of circuit between the second end of power supply and first node, wherein, first node is the connected node starting winding and the first Working winding; Controller, be electrically connected with change over switch and switch element respectively, for controlling the on off state of change over switch and switch element, so solve in correlation technique by control motor positive and inverse clean impeller time, the baroque technical problem of motor-drive circuit used.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the AC electric machine driving circuit for range hood of the utility model embodiment;
Fig. 2 is a kind of optionally for the structural representation of the AC electric machine driving circuit of range hood of the utility model embodiment;
Fig. 3 is that another of the utility model embodiment is optionally for the structural representation of the AC electric machine driving circuit of range hood; And
Fig. 4 is the alternating current machine rotating control flow chart of the utility model embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that embodiment of the present utility model described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, product or equipment or unit.
The utility model provides a kind of AC electric machine driving circuit for range hood.
In the configuration that it is the most basic, Fig. 1 is the structural representation of the AC electric machine driving circuit for range hood of the utility model embodiment, Fig. 2 and Fig. 3 is all a kind of optionally for the structural representation of the AC electric machine driving circuit of range hood of the utility model embodiment.Due to the object described, the architecture painted is only an example of applicable environment, not any limitation is proposed to the scope of application of the application or function, also this AC electric machine driving circuit should be interpreted as the arbitrary assembly shown in accompanying drawing 1,2,3 or its combination has any dependence or demand.
As shown in Figure 1, the AC electric machine driving circuit for range hood comprises: alternating current machine 110, change over switch 120, switch element 130, controller 140; Wherein,
Alternating current machine 110, after the startup winding 111 tandem promoter electric capacity 112 of alternating current machine 110, in parallel with the first Working winding 113 of alternating current machine 110;
Change over switch 120, the first end c of change over switch 120 is connected to the first end 151 of power supply, second end b of change over switch 120 and the 3rd end a is connected to the two ends of start-up capacitance 112, for the first end c and change over switch that connect change over switch the second end b or connect the first end c of change over switch and the 3rd end a of change over switch;
Switch element 130, be connected between the second end 152 of power supply and first node 160, for controlling the break-make of circuit between the second end 152 of power supply and first node 160, wherein, first node 160 is the connected node starting winding 111 and the first Working winding 113;
Controller 140, is electrically connected with change over switch 120 and switch element 130 respectively, for controlling the on off state of change over switch 120 and switch element 130.
In the scheme of the above-mentioned AC electric machine driving circuit for range hood of the utility model, the first Working winding 113 can be all or part of operation winding of alternating current machine.Change over switch 120 optionally has control end d, switch element 130 optionally has control end e, in this case, controller 140, the mode be connected with switch element 130 with change over switch 120 is respectively: controller 140 is connected with the control end e of switch element 130 with the control end d of change over switch 120 respectively.Switch element 130 is preferably electric-controlled switch unit, and time necessary, switch element can also be delay switch unit, hand switch unit (such as key switch) or temperature switch unit etc.As long as the device that can complete disconnection and connecting moves all can be included in switch element.Alternatively, switch element 130 can also be the combination of above-mentioned various switch.Controller is other functional circuits needed that normally work, such as power supply circuits, is limited to length restriction, will illustrate in the drawings.
It should be noted that herein, change over switch is can for the device for switching of two-way load transfer, change over switch is formed by more piece contact combinations, and in the utility model embodiment, change over switch at least comprises first end, the second end, the 3rd end and control end, wherein, control end connection control device, for reception control signal, change over switch is under control of the control signal, switch in the following two kinds conducting situation: first end and the second termination are led to, and first end is logical with the 3rd termination.
In sum, controller 140 by controlling the on off state of above-mentioned switch element 130, and then controls the break-make of circuit between power supply second end 152 and first node 160, further controls rotation and the stopping of alternating current machine 110; Meanwhile, controller 140 connects the second end by the first end controlling change over switch 120 or first end connects the 3rd end, and then controls rotating and reverse of alternating current machine 110.Generally speaking, achieve and whether motor rotated and be that forward or reverse controls.
The above-mentioned AC electric machine driving circuit for range hood of the present utility model, comprise alternating current machine 110, change over switch 120, switch element 130, controller 140, wherein, alternating current machine, after the startup windings in series start-up capacitance of alternating current machine, in parallel with the first Working winding of alternating current machine; Change over switch, the first end of change over switch is connected to the first end of power supply, second end of change over switch and the 3rd end are connected to the two ends of start-up capacitance, for the first end and change over switch of connecting change over switch the second end or connect the first end of change over switch and the 3rd end of change over switch; Switch element, is connected between the second end of power supply and first node, and for controlling the break-make of circuit between the second end of power supply and first node, wherein, first node is the connected node starting winding and the first Working winding; Controller, be electrically connected with the control end of change over switch and the control end of switch element respectively, for controlling the on off state of change over switch and switch element, solve in correlation technique by control motor positive and inverse clean impeller time, the baroque technical problem of motor-drive circuit used.
Alternatively, change over switch be following any one: double-contact relay and two-way switch.
Concrete, when change over switch is double-contact relay, the first end of change over switch can be the common of double-contact relay, second end of change over switch can be normally-closed contact or the normally opened contact of double-contact relay, 3rd end of change over switch can be normally opened contact or the normally-closed contact of double-contact relay, and the control end of change over switch can be the first coil contact or the second coil contact of double-contact relay.A kind of annexation of optional double-contact relay is as follows: the common of double-contact relay is connected to the first end of power supply, the normally opened contact of double-contact relay and normally-closed contact are connected to the two ends of start-up capacitance, and the first coil contact of double-contact relay is connected with controller.
Concrete, when change over switch is two-way switch, a wherein road of two-way switch controls the break-make of circuit between first end and the 3rd end, an other road in two-way switch controls the break-make of circuit between first end and the second end, by the control signal that control end reception controller sends, make alternate conduction between two-way switch first end and the 3rd end, between first end and the second end, and then achieve the control to motor positive and inverse.
Following be double-contact relay with change over switch is example, is described in detail to the technical solution of the utility model.Fig. 2 is a kind of optionally for the structural representation of the AC electric machine driving circuit of range hood of the utility model embodiment; As shown in Figure 2, the AC electric machine driving circuit for range hood comprises: alternating current machine 110, double-contact relay 121, switch element 130, controller 140, wherein,
Alternating current machine 110, after the startup winding 111 tandem promoter electric capacity 112 of alternating current machine 110, in parallel with the first Working winding 113 of alternating current machine 110;
Double-contact relay 121, the common c of double-contact relay 121 is connected to the first end 151 of power supply, and the normally opened contact a of double-contact relay 121 and normally-closed contact b is connected to the two ends of start-up capacitance 112;
Switch element 130, be connected between the second end 152 of power supply and first node 160, for controlling the break-make of circuit between the second end 152 of power supply and first node 160, wherein, first node 160 is the connected node starting winding 111 and the first Working winding 113;
Controller 140, is connected with the control end e of switch element 130, for controlling the on off state of double-contact relay 121 and switch element 130 with the first coil contact d of double-contact relay 121 respectively.
It should be noted that herein, although the second coil contact of double-contact relay 121 is not shown in fig. 2, but should know, when having electric current to pass through in the coil of relay, relay jumps to normally opened contact from normally-closed contact, therefore, when the first coil contact d of this double-contact relay 121 is connected to controller, according to the state of a control preset and the output voltage of controller, can determine that the second coil contact connects power supply or ground connection.
In sum, controller 140 by controlling the on off state of above-mentioned switch element 130, and then controls the break-make of circuit between the second end 152 of power supply and first node 160, further controls rotation and the stopping of alternating current machine 110; Meanwhile, controller 140 switches between normally opened contact and normally-closed contact by controlling double-contact relay 121, and then controls rotating and reverse of alternating current machine 110.Generally speaking, achieve and whether motor rotated and be to rotate forward or reversion controls.
Alternatively, between controller and the first coil contact of double-contact relay, be also in series with the first driver element, for driving double-contact relay to switch between normally opened contact and normally-closed contact according to the output of controller.
Alternatively, the first driver element comprises the first triode, the base stage connection control device of the first triode, and collector electrode connects the first coil contact of double-contact relay, emitter grounding, and the second coil contact of double-contact relay connects power supply; Or the base stage connection control device of the first triode, emitter-base bandgap grading connects the first coil contact of double-contact relay, and collector electrode connects power supply, the second coil contact ground of double-contact relay.
In the application scenarios of reality, the AC electric machine driving circuit for range hood in above-mentioned optional or preferred embodiment all can be used for driving the impeller on range hood, make impeller get rid of grease except absorption on it by positive and negative the transferring of impeller, and then reach the object of cleaning range hood.
Of the present utility model above-mentioned optionally for the AC electric machine driving circuit of range hood, comprise alternating current machine 110, double-contact relay 121, switch element 130, and controller 140, wherein, after the startup windings in series start-up capacitance of alternating current machine, in parallel with the first Working winding of alternating current machine, the common of double-contact relay is connected to the first end of power supply, the normally opened contact of double-contact relay and normally-closed contact are connected to the two ends of start-up capacitance, switch element is connected between the second end of power supply and first node, for controlling the break-make of circuit between the second end of power supply and first node, wherein, first node is the connected node starting winding and the first Working winding, controller, be connected with the control end of switch element with the first coil contact of double-contact relay respectively, for controlling the on off state of double-contact relay and switch element, solve in correlation technique by control motor positive and inverse clean impeller time, the baroque technical problem of motor-drive circuit used.
Fig. 3 is a kind of optionally for the structural representation of the AC electric machine driving circuit of range hood of the utility model embodiment.Shown in composition graphs 1, Fig. 2 and Fig. 3, wherein, above-mentioned alternating current machine 110 can be the alternating current machine M in Fig. 3, and above-mentioned startup winding 111 can be the winding 11 in Fig. 3, above-mentioned start-up capacitance 112 can be the electric capacity C2 in Fig. 3, and above-mentioned first Working winding 113 can be the winding 12 in Fig. 3; Above-mentioned change over switch 120 or double-contact relay 121 can be the relay K 1 in Fig. 3, and above-mentioned switch element 130 can comprise the relay K 2 shown in Fig. 3, relay K 3 and relay K 4; Above-mentioned controller 140 can be the controller shown in Fig. 3, and the first end 151 of above-mentioned power supply can be the zero line in Fig. 3, and the second end 152 of above-mentioned power supply can be the live wire in Fig. 3; Above-mentioned first node 160 can be the node A in Fig. 3, concrete, in figure 3:
In parallel with first Working winding 12 of alternating current machine M after the startup winding 11 tandem promoter electric capacity C2 of alternating current machine M.
The common c of double-contact relay K1 is connected to the first end (zero line of civil power) of power supply, and the normally opened contact a of double-contact relay K1 and normally-closed contact b is connected to the two ends of start-up capacitance C2.
Switch element, comprise K2, K3, K4, be connected between second end (live wire of civil power) of power supply and first node A, for controlling the break-make of circuit between second end (live wire of civil power) of power supply and first node A, wherein, first node A is the connected node starting winding 11 and the first Working winding 12.Concrete, in K2, K3, K4 of parallel connection during any one conducting, switch element 130 conducting, when K2, K3, K4 of parallel connection all disconnect, switch element 130 disconnects.
Controller, is connected with the control end of switch element with the first coil contact of double-contact relay K1, respectively for controlling the on off state of double-contact relay K1 and switch element.
Here it should be noted that, before double-contact relay K1 action, the connection of circuit between second end (live wire of civil power) of the necessary deenergization of switch element and first node A, guarantee that start-up capacitance C2 two ends do not exist residual voltage, to ensure that double-contact relay K1 is when contact change-over, can not there is electric arc in double-contact relay K1, and then extend the useful life of double-contact relay K1.
Below using Fig. 3 as one of them instantiation, introduce the alternative variant part of Fig. 3 relative to Fig. 1 or Fig. 2.
Alternatively, in the utility model embodiment, between controller and the first coil contact of double-contact relay K1, be also in series with the first driver element, the first driver element is used for driving double-contact relay K1 to switch between normally opened contact a and normally-closed contact b according to the output of controller.
Particularly, the reversion contact point of alternating current machine M is the node that startup winding 11 is connected with start-up capacitance C2, or perhaps second end of start-up capacitance C2; The positive switching contact of alternating current machine M is the node that the first Working winding 12 is connected with start-up capacitance C2, or perhaps the first end of start-up capacitance C2.Based on above-mentioned reversion contact point and positive switching contact, the normally opened contact a of double-contact relay K1 is connected with the reversion contact point of alternating current machine M, the normally-closed contact b of double-contact relay K1 is connected with the positive switching contact of alternating current machine M, when the control signal that controller exports is alternating current machine M reverse signal, first driver element is according to the output signal of controller, drive double-contact relay K1 to be switched to normally opened contact a, now the first coil contact of double-contact relay K1 is connected with alternating current machine M reversed line.By above-mentioned mode, can determine that the level controlled required for motor forward or reverse is high level or low level.
Alternatively, when the first driver element is the first triode Q1, the connected mode of the first triode can have the following two kinds:
In a kind of connected mode, as shown in Figure 3, the base stage connection control device of the first triode Q1, collector electrode connects the first coil contact of double-contact relay K1, emitter grounding, and the second coil contact of double-contact relay K1 meets power supply+VCC;
In another kind of connected mode, the base stage connection control device of the first triode Q1, emitter-base bandgap grading connects the first coil contact of double-contact relay K1, and collector electrode meets power supply+VCC, the second coil contact ground of double-contact relay K1.
Particularly, the first triode Q1 can for driving the common triode of double-contact relay K1, and the first driver element drives the first triode Q1 according to the control signal that controller exports.
Alternatively, in the utility model, the first Working winding 12 is the operation winding of alternating current machine M, or one of them winding element be separated into by the operation winding of alternating current machine M by least one tap.
Alternatively, in the utility model, switch element 130 comprises at least one relay, and the quantity of the relay that switch element 130 comprises is identical with the quantity of the winding element that the operation winding of alternating current machine M is separated into.Can say, when the operation winding of alternating current machine M is separated into n winding element, accordingly, switch element should comprise n relay.
Alternatively, shown in composition graphs 3, in the utility model, when the operation winding of alternating current machine M is separated into the first Working winding 12, when the second Working winding 13 and the 3rd Working winding 14, switch element comprises the second relay K 2, 3rd relay K 3 and the 4th relay K 4, wherein, second relay K 2, the common of the 3rd relay K 3 and the 4th relay K 4 is all connected to second end (live wire of civil power) of power supply, the normally opened contact of the second relay K 2 is connected to first node A, the normally opened contact of the 3rd relay K 3 is connected to first node A by the second Working winding 13, the normally opened contact of the 4th relay K 4 is connected to first node A by the 3rd Working winding 14 and the second Working winding 13, second relay K 2, first coil contact of the 3rd relay K 3 and the 4th relay K 4 is connected to controller.Now, the second relay K 2, the 3rd relay K 3 and the 4th relay K 4 control respectively alternating current machine M according to fast, in, slow three gears run.
Alternatively, in the utility model, at controller and between the second relay K 2, the 3rd relay K 3 and the 4th relay K 4, also be in series with the second driver element, the 3rd driver element and four-wheel drive unit respectively, wherein, the second driver element, the 3rd driver element and four-wheel drive unit are respectively used to drive the second relay K 2, the 3rd relay K 3 and the 4th relay K 3 to switch between normally opened contact and normally-closed contact respectively according to the output of controller.
Alternatively, in the utility model, the second driver element comprises the second triode Q2, and the 3rd driver element comprises the 3rd triode Q3, and four-wheel drive unit comprises the 4th triode Q4, wherein:
The base stage connection control device of the second triode Q2, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the second relay K 2, wherein another is connected VDD-to-VSS respectively with the second coil contact of the second relay K 2 for emitter-base bandgap grading and collector electrode; And/or
Concrete, above-mentioned connected mode means: when the emitter-base bandgap grading of the second triode Q2 connects the first coil contact of the second relay K 2, the collector electrode of the second triode Q2 connects power supply, the second coil contact ground of the second relay K 2; When the collector electrode of the second triode Q2 connects the first coil contact of the second relay K 2, the second triode Q2 penetrates a grade ground connection, and the second relay K 2 second coil contact connects power supply.Can refer to the connected mode of the first triode.
The base stage connection control device of the 3rd triode Q3, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the 3rd relay K 3, wherein another is connected VDD-to-VSS respectively with the second coil contact of the 3rd relay K 3 for emitter-base bandgap grading and collector electrode; And/or
The Q4 base stage connection control device of the 4th triode, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of the 4th relay K 4, wherein another is connected VDD-to-VSS respectively with the second coil contact of the 4th relay K 4 for emitter-base bandgap grading and collector electrode.Concrete, the connected mode of the 3rd triode and the 4th triode, can refer to above-mentioned second triode.
Alternatively, in the utility model, between the second Working winding 13 and first node A, be in series with protective device F.
Particularly; shown in composition graphs 3; can be thermal protector at the second Working winding 13 and the protective device F connected between first node A, above-mentioned thermal protector be connected between startup winding 11, first Working winding 12 (fast gear) of alternating current machine M and the second Working winding 13 (middle gear) in addition.
Alternatively, in the utility model, the AC electric machine driving circuit for range hood also comprises: switch and/or button, and controller is used for according to the manual operation to switch and/or button, produce control signal, control the on off state of change over switch and switch element.
Particularly, be applied to range hood automatic flushing device for the AC electric machine driving circuit for range hood in the utility model to be described, range hood automatic flushing device is started at any time for the ease of user, this AC electric machine driving circuit also comprises: switch and/or button, manually control command is released to controller to facilitate user, drive fume-exhausting inner spiral casing impeller to carry out rotating by AC electric machine driving circuit, thus utilize inertia to be got rid of by the grease be attached on impeller.In addition, shown in composition graphs 3, S1-S5 in figure is switch and/or the button of AC electric machine driving circuit, the function of these switches and/or button can be: starting switch and/or button, each wind-speed gear switch and/or button and luminous lamp switch and/or button, above-mentioned switch and/or button are as the criterion with the control of the different running statuses realizing alternating current machine, specifically do not limit.
Alternatively, in the utility model, controller also makes circuit between the second end of power supply (live wire of civil power) and alternating current machine M disconnect and continue the first Preset Time for control switch unit, controlling double-contact relay K1 makes alternating current machine M switching turn to and continue the second Preset Time, and control switch unit makes circuit turn-on between second end (live wire of civil power) of power supply and alternating current machine and continues the 3rd Preset Time.
Particularly, be applied to range hood automatic flushing device for the AC electric machine driving circuit for range hood in the utility model to be described, controller control switch unit makes circuit between the second end of power supply (live wire of civil power) and alternating current machine M disconnect and continue the first Preset Time, such as continue 2 seconds, controlling double-contact relay K1 makes alternating current machine M switching turn to, such as jump from normally-closed contact b (rotate forward and control) to normally opened contact a (reversion controls) and close, namely the first end (zero line of civil power) of power supply is connected with the reversion control line of alternating current machine M by the first coil contact of double-contact relay K1, and continue the second Preset Time, such as continue 3 seconds, control switch unit makes circuit turn-on between second end (live wire of civil power) of power supply and alternating current machine and continues the 3rd Preset Time, such as continue 10 seconds, now alternating current machine M continues reversion 10 seconds.
Alternatively, in the utility model, controller also for: control the second relay K 2, the 3rd relay K 3 and the 4th relay K 4 and disconnect and continue the first Preset Time, control double-contact relay K1 to perform once to jump to merge and continue the second Preset Time, the second relay K 2, the 3rd relay K 3 and the 4th relay K 4 one of them close and continue the 3rd Preset Time.
Particularly, still be applied to range hood automatic flushing device for the AC electric machine driving circuit for range hood in the utility model to be described, controller also for: control the second relay K 2, 3rd relay K 3 and the 4th relay K 4 disconnect and continue the first Preset Time, such as continue 2 seconds, control double-contact relay K1 execution and once jump conjunction, such as close from normally opened contact a (reversion controls) to jumping from normally-closed contact b (rotate forward and control), namely the first end (zero line of civil power) of power supply is connected with the rotating forward control line of alternating current machine M by the first coil contact of double-contact relay K1, and continue the second Preset Time, such as continue 3 seconds, second relay K 2, 3rd relay K 3 and the 4th relay K 4 one of them close and continue the 3rd Preset Time, such as continue 10 seconds, now alternating current machine M continues rotating forward 10 seconds.
To sum up, still be applied to range hood automatic flushing device for the AC electric machine driving circuit for range hood in the utility model to be described, this range hood automatic flushing device is by alternating current machine M, start-up capacitance C2 and the control circuit driving alternating current machine M to carry out rotating form, the control circuit wherein driving alternating current machine M to carry out rotating to be installed on range hood complete machine inside, double-contact relay is adopted to carry out contact change-over, the AC electric machine driving circuit provided by the utility model, can guarantee that double-contact relay electric arc can not occur in rotating switches, avoiding relay used in correlation technique is switching in capacitive load process, easy generation electric arc, and make relay contact weld adhesion, further, controlled by above-mentioned rotating, alternating current machine M can first rotate forward 10 seconds, then 5 seconds are stopped, reverse again afterwards 10 seconds, stop 5 seconds again, so repeatedly, fume-exhausting inner spiral casing impeller is driven to carry out rotating, thus utilize inertia to be got rid of by the grease be attached on impeller, reach the object of cleaning impeller in time, treat that alternating current machine M runs several cycle backed off after random positive-negative rotation state continuously and shuts down.
Fig. 4 is the alternating current machine rotating control flow chart of the utility model embodiment, still be applied to range hood automatic flushing device for the AC electric machine driving circuit for range hood in the utility model to be described, below concrete introduction done to the flow process that the utility model implements the routine alternating current machine rotating provided of institute:
In actual application, double-contact relay K1 is in normally open, by the second relay K 2, the 3rd relay K 3 and the 4th relay K 4 action, fast when can carry out range hood cleaning, in, the operation of slow shelves and operation.When pressing cancel key or after range hood continuous operation a period of time, above-mentioned range hood will enter cleaning state automatically, namely cleans the grease on range hood impeller by motor positive and inverse, and shown in composition graphs 4, cleaning process is as follows:
Cleaning process 1: cleaning starting point, control the second relay K 2, the 3rd relay K 3 and the 4th relay K 4 all to disconnect, now cut off the power supply of alternating current machine M, start-up capacitance C2 is undertaken persisting voltage release by starting winding 11, first Working winding 12, enters cleaning process 2 after 2 seconds;
Cleaning process 2: control double-contact relay K1 action, jump from normally-closed contact b (rotate forward and control) to normally opened contact a (reversion controls) and close, namely the first end (zero line of civil power) of power supply is connected with the reversion control line of alternating current machine M by the first coil contact of double-contact relay K1, again after 3 seconds, enter cleaning process 3;
Cleaning process 3: control the second relay K 2 adhesive, now alternating current machine M starts reversion, runs after 10 seconds, enters cleaning process 4;
Cleaning process 4: control the 4th relay K 4 and disconnect, alternating current machine M stops reversion, start-up capacitance C2 is undertaken persisting voltage release by starting winding 11, first Working winding 12, after 2 seconds, enters cleaning process 5;
Cleaning process 5: control double-contact relay K1 action again, close from normally opened contact a (reversion controls) to jumping from normally-closed contact b (rotate forward and control), namely the first end (zero line of civil power) of power supply is connected with the rotating forward control line of alternating current machine M by the first coil contact of double-contact relay K1, then enters cleaning process 6 after 3 seconds;
Cleaning process 6: control the 4th relay K 4 adhesive, now alternating current machine M starts to rotate forward, and run after 10 seconds, the 4th relay K 4 disconnects adhesive, and alternating current machine M shuts down.So, this group cleaning process receives, and capable of circulationly performs to cleaning process 1.
It should be noted that, the combination of above-mentioned cleaning process is a kind of cleaning process group of the multiple exercise that can circulate, but might not be the cleaning process group of least unit.So go round and begin again, alternating current machine M runs several cycle backed off after random positive-negative rotation state continuously and shuts down.Thus, controlled by the rotating of alternating current machine M, first rotate forward 10 seconds, then stop 5 seconds, reverse again afterwards 10 seconds, then stop 5 seconds, so repeatedly, drive fume-exhausting inner spiral casing impeller to carry out rotating, thus utilize inertia to be got rid of by the grease be attached on impeller, reach the object of cleaning impeller in time.
The utility model additionally provides a kind of range hood, comprises the AC electric machine driving circuit for range hood in any one optional or preferred embodiment above-mentioned.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (12)
1. for an AC electric machine driving circuit for range hood, it is characterized in that, comprising:
Alternating current machine, after the startup windings in series start-up capacitance of described alternating current machine, in parallel with the first Working winding of described alternating current machine;
Change over switch, the first end of described change over switch is connected to the first end of power supply, second end of described change over switch and the 3rd end are connected to the two ends of described start-up capacitance, for the first end and described change over switch of connecting described change over switch the second end or connect the first end of described change over switch and the 3rd end of described change over switch;
Switch element, be connected between the second end of described power supply and first node, for controlling the break-make of circuit between the second end of described power supply and described first node, wherein, described first node is the connected node of described startup winding and described first Working winding;
Controller, is electrically connected with described change over switch and described switch element respectively, for controlling the on off state of described change over switch and described switch element.
2. circuit according to claim 1, it is characterized in that, described change over switch be following any one: double-contact relay and two-way switch, wherein, when described change over switch is double-contact relay, the common of described double-contact relay is connected to the first end of described power supply, and the normally opened contact of described double-contact relay and normally-closed contact are connected to the two ends of described start-up capacitance, and the first coil contact of described double-contact relay is connected with described controller.
3. circuit according to claim 2, it is characterized in that, between described controller and the first coil contact of described double-contact relay, be also in series with the first driver element, for driving described double-contact relay to switch between normally opened contact and normally-closed contact according to the output of described controller.
4. circuit according to claim 3, it is characterized in that, described first driver element comprises the first triode, wherein, the base stage of described first triode connects described controller, collector electrode connects the first coil contact of described double-contact relay, emitter grounding, and the second coil contact of described double-contact relay connects described power supply; Or the base stage of described first triode connects described controller, described emitter-base bandgap grading connects the first coil contact of described double-contact relay, and described collector electrode connects described power supply, the second coil contact ground of described double-contact relay.
5. circuit according to claim 1, is characterized in that, described first Working winding is the operation winding of described alternating current machine, or one of them winding element be separated into by the operation winding of described alternating current machine by least one tap.
6. circuit according to claim 5, is characterized in that, described switch element comprises at least one relay, and the quantity of the relay that described switch element comprises is identical with the quantity of the winding element that the operation winding of described alternating current machine is separated into.
7. circuit according to claim 6, it is characterized in that, when the operation winding of described alternating current machine is separated into described first Working winding, when the second Working winding and the 3rd Working winding, described switch element comprises the second relay, 3rd relay and the 4th relay, wherein, described second relay, the common of described 3rd relay and described 4th relay is all connected to the second end of described power supply, the normally opened contact of described second relay is connected to described first node, the normally opened contact of described 3rd relay is connected to described first node by described second Working winding, the normally opened contact of described 4th relay is connected to described first node by described 3rd Working winding and described second Working winding, described second relay, first coil contact of described 3rd relay and described 4th relay is connected to described controller.
8. circuit according to claim 7, it is characterized in that, at described controller and between described second relay, described 3rd relay and described 4th relay, also be in series with the second driver element, the 3rd driver element and four-wheel drive unit respectively, wherein, described second driver element, described 3rd driver element and described four-wheel drive unit are respectively used to drive described second relay, described 3rd relay and described 4th relay to switch between normally opened contact and normally-closed contact respectively according to the output of described controller.
9. circuit according to claim 8, is characterized in that, described second driver element comprises the second triode, and described 3rd driver element comprises the 3rd triode, and described four-wheel drive unit comprises the 4th triode, wherein:
The base stage of described second triode connects described controller, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of described second relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of described second relay for emitter-base bandgap grading and collector electrode; And/or
The base stage of described 3rd triode connects described controller, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of described 3rd relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of described 3rd relay for emitter-base bandgap grading and collector electrode; And/or
The base stage of described 4th triode connects described controller, emitter-base bandgap grading and collector electrode one of them be connected the first coil contact of described 4th relay, wherein another is connected VDD-to-VSS respectively with the second coil contact of described 4th relay for emitter-base bandgap grading and collector electrode.
10. circuit according to claim 7, is characterized in that, between described second Working winding and described first node, is in series with protective device.
11. circuit as claimed in any of claims 1 to 10, it is characterized in that, described circuit also comprises: switch and/or button, described controller is also for according to the manual operation to described switch and/or button, produce control signal, control the on off state of described change over switch and described switch element.
12. 1 kinds of range hoods, is characterized in that, comprise the AC electric machine driving circuit for range hood in claim 1 to 11 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520497898.8U CN204794788U (en) | 2015-07-08 | 2015-07-08 | Range hood and be used for range hood's AC motor drive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520497898.8U CN204794788U (en) | 2015-07-08 | 2015-07-08 | Range hood and be used for range hood's AC motor drive circuit |
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| CN204794788U true CN204794788U (en) | 2015-11-18 |
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| CN201520497898.8U Active CN204794788U (en) | 2015-07-08 | 2015-07-08 | Range hood and be used for range hood's AC motor drive circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763130A (en) * | 2016-05-17 | 2016-07-13 | 珠海格力电器股份有限公司 | Single-phase multi-gear motor |
| CN106230338A (en) * | 2016-07-25 | 2016-12-14 | 珠海凌达压缩机有限公司 | The control method of monophase machine and circuit |
| CN107349728A (en) * | 2017-06-28 | 2017-11-17 | 佛山市科思博科技有限公司 | Automatic scavenging air power oil fume purifier and its auto-cleaning method |
| CN107355833A (en) * | 2017-08-02 | 2017-11-17 | 芜湖美的厨房电器制造有限公司 | The control device of range hood and there is its range hood |
| CN110319472A (en) * | 2019-07-29 | 2019-10-11 | 广东爱贝尔电气股份有限公司 | One key accelerates smoke exhaust ventilator |
| CN112443504A (en) * | 2019-08-29 | 2021-03-05 | 宁波方太厨具有限公司 | Impeller maintenance method in centralized smoke exhaust system of building |
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2015
- 2015-07-08 CN CN201520497898.8U patent/CN204794788U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763130A (en) * | 2016-05-17 | 2016-07-13 | 珠海格力电器股份有限公司 | Single-phase multi-gear motor |
| CN106230338A (en) * | 2016-07-25 | 2016-12-14 | 珠海凌达压缩机有限公司 | The control method of monophase machine and circuit |
| CN106230338B (en) * | 2016-07-25 | 2019-04-30 | 珠海凌达压缩机有限公司 | The control method and circuit of monophase machine |
| CN107349728A (en) * | 2017-06-28 | 2017-11-17 | 佛山市科思博科技有限公司 | Automatic scavenging air power oil fume purifier and its auto-cleaning method |
| CN107355833A (en) * | 2017-08-02 | 2017-11-17 | 芜湖美的厨房电器制造有限公司 | The control device of range hood and there is its range hood |
| CN110319472A (en) * | 2019-07-29 | 2019-10-11 | 广东爱贝尔电气股份有限公司 | One key accelerates smoke exhaust ventilator |
| CN112443504A (en) * | 2019-08-29 | 2021-03-05 | 宁波方太厨具有限公司 | Impeller maintenance method in centralized smoke exhaust system of building |
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