CN100441769C - Electric household dewatering machine with energy-dissipating brake circuit - Google Patents
Electric household dewatering machine with energy-dissipating brake circuit Download PDFInfo
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- CN100441769C CN100441769C CNB021149062A CN02114906A CN100441769C CN 100441769 C CN100441769 C CN 100441769C CN B021149062 A CNB021149062 A CN B021149062A CN 02114906 A CN02114906 A CN 02114906A CN 100441769 C CN100441769 C CN 100441769C
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Abstract
The present invention relates to an electric household dewatering machine with a dynamic braking circuit, particularly to an electric household dewatering machine with a dynamic braking circuit in common double-tube washing machines. The present invention is characterized in that when a machine door is opened, a switching device controlled by the open/close operation of the machine door converts a timing device of the dewatering machine from the time for controlling the power supply operation of a motor which drives a dewatering tube into the time for controlling the motor to be switched on a dynamic braking rectification circuit, wherein the winding temperature of the motor is within the specified value of the product standard of the electric household dewatering machine even if the timing device is switched on the rectification circuit at the longest definite time. The electric household dewatering machine with a dynamic braking circuit saves a special timing circuit or a device or relative transfer contacts for dynamic braking in the prior art, obviously simplifies circuits, has reliable and safe operation, improves traditional mechanical braking products by a dynamic braking technology, enhances the quality and reduces the cost.
Description
Technical field
The present invention relates to have the electric household dewatering machine of energy-dissipating brake circuit, the Water Extraction Machinery in especially such plain edition two-tub washing machine.
Background technology
Water Extraction Machinery in electric household dewatering machine, especially the plain edition two-tub washing machine for preventing mechanical hazard, if gate is opened by accident, need be braked the dehydration barrel of rotating when dehydration barrel turns round, and is to implement mechanical braking traditionally.Mechanical braking with respect to dynamic braking take up space greatly, install adjust trouble, understable, wearing and tearing are arranged, shortcomings such as noise and cost be higher are arranged.Prior art proposes to replace mechanical braking at electric household dewatering machine with dynamic braking, be found in Chinese utility application specification " CN87204096: washing machine, drying machine motor deceleration of electrons device " and " CN2036186U: Water Extraction Machinery dynamic braking device ", and Chinese utility model patent specification " ZL93223413.5: washing machine dehydration electric motor dynamic braking device " and " ZL92245847.2: the electric brake arrangement of household electrical appliance motor ".But, prior art is continued to use dynamic braking design traditional on the industrial electrical equipment basically, thereby increased complicated dynamic braking control circuit with respect to traditional product, comprise that restriction connects timing circuit or the device and relevant transfer contact or PTC element of rectification circuit time; Though so that can overcome the shortcoming of mechanical braking, because obvious complicated new reliability and the cost problem of causing of circuit do not seen in actual product and used.
Summary of the invention
Technical problem to be solved by this invention is, at the little characteristics of the motor power (output) of electric household dewatering machine, a kind of electric household dewatering machine with energy-dissipating brake circuit is proposed, compared with the prior art, control circuit is simplified, thereby improved reliability and reduce cost.
The technical scheme that the present invention solve the technical problem is, a kind of electric household dewatering machine with energy-dissipating brake circuit, comprise dehydration barrel, it when dehydration barrel turns round the gate that prevents that mechanical hazard from need close, drive the motor of dehydration barrel, the rectification circuit of dynamic braking, the timing means of control motor operation time, the supply unit of each several part power supply in machine, be subjected to the switching device of gate switching motion control: when gate is closed, power power supply from supply unit enters motor, makes its running; When gate was opened, described switching device disconnected from the power of supply unit motor and powers, and connects rectification circuit, carries out dynamic braking; When gate was opened, described timing means was powered from the control motor and is converted to the control motor connection rectification circuit time duration of runs; It is characterized in that: even described motor is to connect described rectification circuit with the longest timing of described timing means, its winding temperature is also in electric household dewatering machine product standard setting.
One of further design of the technical scheme that the present invention solve the technical problem is that described electric household dewatering machine with energy-dissipating brake circuit is characterized in that: described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at supply unit; One utmost point of described supply unit after this connects the tie-point of described single-phase condenser motor principal phase winding and capacitor, another utmost point connects the tie-point of break contact and moving together contact, break contact connects the common port of described single-phase condenser motor principal phase winding and parafacies winding, and the moving together contact described diode of connecting connects the tie-point of described single-phase condenser motor parafacies winding and capacitor; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, series connection is arrived another utmost point through the moving together contact of principal phase winding, parafacies winding, diode and the described switching device of described single-phase condenser motor, constitutes half-wave rectifying circuit.
Two of the further design of the technical scheme that the present invention solve the technical problem is it is characterized in that: described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode, and cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device and the tie-point of moving together contact with the tie-point of capacitor, the moving together contact of described switching device connects the tie-point of described single-phase condenser motor parafacies winding and capacitor; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, through diode, make its principal phase winding circuit in parallel with the connection owing to described switching device moving together contact in the described single-phase condenser motor with the parafacies winding, to another utmost point, constitute half-wave rectifying circuit.
Three of the further design of the technical scheme that the present invention solve the technical problem is it is characterized in that: described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode, and cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device and the tie-point of moving together contact with the tie-point of capacitor, connect the tie-point of described single-phase condenser motor parafacies winding and capacitor behind resistance of moving together contact series connection of described switching device; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, through diode, with in the described single-phase condenser motor because the connection of described switching device moving together contact makes the circuit of its principal phase winding and the parafacies winding parallel connection of the described resistance of connecting, to another utmost point, constitute half-wave rectifying circuit.
Four of the further design of the technical scheme that the present invention solve the technical problem is it is characterized in that: described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises two diodes, and one of them diode cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device and the tie-point of moving together contact, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device with the tie-point of capacitor, connect the tie-point of described single-phase condenser motor parafacies winding and capacitor behind described another diode of moving together contact series connection of described switching device; Described two connections of diode in circuit are for the same very identical rectification direction of supply unit; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, enter principal phase winding and parafacies winding in the described single-phase condenser motor through two diodes respectively, to another utmost point, constitute two tunnel half-wave rectifying circuit.
According to the technical scheme that the present invention solve the technical problem,, the timing circuit and relevant transfer contact of prior art dynamic braking special use have been saved with the double function of controlling the dynamic braking time of timing means that original control is dewatered the duration of runs; Again since to supporting motor require: even connect described rectification circuit with the longest timing of described timing means; its winding temperature is also in electric household dewatering machine product standard setting; make: though the control time of described timing means the longlyest can reach several minutes usually; make the time (being generally the several seconds) of when dynamic braking conduction time can be much larger than unlatching gate that product standard requires dehydration barrel being stopped and stopping, but circuit still can be not overheated.This design is owing to utilized its motor power (output) little applicable to electric household dewatering machine, thereby can be as the situation of powerful industrial electrical equipment when the braking: needing stop disconnects rectification circuit after stopping immediately, in order to avoid overheated.Because the motor that meets the product standard requirement that uses on the present traditional product, can meet the feature request of technical solution of the present invention to described motor, the circuit that technical solution of the present invention is obviously simplified compared with the prior art, just reach the use brake technique of energy and improved traditional product, safe and reliable, thereby the purpose that improves the quality and reduce cost.The further design of each of the technical scheme that the present invention solve the technical problem is the more favourable scheme at the motor and the switching device of different rated capacity products.
Description of drawings
The following drawings is used to illustrate the specific embodiment of the present invention.
Fig. 1 is the circuit diagram of the present invention's the 1st embodiment electric household dewatering machine;
Fig. 2 is the circuit diagram of the present invention's the 2nd embodiment electric household dewatering machine;
Fig. 3 is the circuit diagram of the present invention's the 3rd embodiment electric household dewatering machine;
Fig. 4 is the circuit diagram of the present invention's the 4th embodiment electric household dewatering machine.
The specific embodiment
The circuit diagram of each embodiment electric household dewatering machine of technical solution of the present invention is seen Fig. 1, Fig. 2, Fig. 3 and Fig. 4, utilizes the Water Extraction Machinery original basic structure in traditional plain edition two-tub washing machine product, comprising: dehydration barrel; It when dehydration barrel turns round the safety switch that prevents the gate that mechanical hazard need be closed and be subjected to its switching motion interlock control; Connect built-up circuit by principal phase winding 4 and parafacies winding 5 in common port M, drive dehydration barrel, meet the single-phase capacitor operation asyn. motor and the capacitor 6 thereof of standard GB 9650 " laundry machine dehydration motor "; The moving together contact that disconnects during with the operation release delay is controlled the described motor operation time, meets the timer 2 of standard GB 3665 " domestic electric washer timer "; The supply unit 1 of each several part power supply in machine; Following transformation is arranged:
1) to the described former safety switch that one group of break contact is only arranged usually, increase by a stationary contact spot film in movable contact spot film side, constitute the safety switch 3 by the break-before-make transfer contact formula of forming of one group of break contact (a-b) and one group of moving together contact (a-c) of the embodiment of the invention: when gate was closed, break contact (a-b) was connected and moving together contact (a-c) disconnection; When gate was opened, break contact (a-b) disconnected and moving together contact (a-c) connection;
2) for the rectification circuit of dynamic braking is provided, increase by 1 or 2 of diode, or 1 of 1 of diode and resistance;
3) 4 kinds of optional circuit connecting modes, the principal phase winding 4 that comprises described motor and parafacies winding 5 can serial or parallel connection insert rectification circuit by the optimal mode of product capacity in the two when dynamic braking.
The circuit of the 1st embodiment electric household dewatering machine is seen Fig. 1: a utmost point of supply unit 1 connects the tie-point of described motor principal phase winding 4 and capacitor 6; Behind the described contact of another utmost point series connection timer 2, connect the break contact (a--b) of safety switch 3 and the common sheet a of moving together contact (a--c), break contact (a--b) meets the common port M of described motor principal phase winding 4 and parafacies winding 5, and the described diode 7 of moving together contact (a--c) series connection connects the tie-point of described motor parafacies winding 5 and capacitor 6.Its course of work is: when timer 2 is operated when making its described contacting, if gate is closed, the break contact of safety switch 3 (a--b) is connected and moving together contact (a--c) disconnection, power supply can enter described motor through the break contact (a--b) of described contact of timer 2 and safety switch 3 and make its running from the power of supply unit 1 two utmost points, until regularly finishing till described contact disconnects; If gate is opened, the break contact of safety switch 3 (a--b) disconnects and moving together contact (a--c) connection, utmost point from supply unit 1, the moving together contact (a--c) of the principal phase winding 4 of the described motor of series connection process, parafacies winding 5, diode 7, safety switch 3 and the described contact of timer 2 are to another utmost point of supply unit 1, constitute half-wave rectifying circuit, make the principal phase winding 4 of described motor and the parafacies winding 5 access DC voltage of connecting, implement dynamic braking.This DC voltage is till regularly finishing the disconnection of described contact.This embodiment is the access DC voltage because principal phase winding 4 and parafacies winding 5 are connected when dynamic braking, and current ratio is less.Experiment shows, its capacity of being particularly suitable for be 4.5kg with interior product, both be enough to make dehydration barrel to open the back safety standard and finished braking in the desired several seconds at gate, described electromotor winding temperature is very low again.
The circuit of the 2nd embodiment electric household dewatering machine is seen Fig. 2: a utmost point of supply unit 1 connects the break contact (a--b) of safety switch 3 and the parallel circuit of diode 8, connects the common port M of described motor principal phase winding 4 and parafacies winding 5 behind another described contact of utmost point series connection timer 2; Described motor principal phase winding 4 is connected the described common sheet a of safety switch 3 with the tie-point of capacitor 6; The moving together contact of safety switch 3 (a--c) connects the tie-point of described motor parafacies winding 5 and capacitor 6.Its course of work is: when timer 2 is operated when making its described contacting, if gate is closed, the break contact of safety switch 3 (a--b) is connected and moving together contact (a--c) disconnection, power supply can enter described motor through the break contact (a--b) of described contact of timer 2 and safety switch 3 and make its running from the power of supply unit 1 two utmost points, until regularly finishing till described contact disconnects; If gate is opened, the break contact of safety switch 3 (a--b) disconnects and moving together contact (a--c) connection, utmost point from supply unit 1, through diode 8, in the described motor because the connection of safety switch 3 moving together contact (a--c) makes its principal phase winding 4 and parafacies winding 5 circuit in parallel, with the described contact of timer 2, another utmost point to supply unit 1, constitute half-wave rectifying circuit, make the principal phase winding 4 and 5 parallel connections of parafacies winding of described motor the access DC voltage, implement dynamic braking.This DC voltage is till regularly finishing the disconnection of described contact.This embodiment is because principal phase winding 4 and parafacies winding 5 access DC voltage in parallel when dynamic braking, and current ratio is bigger, and dynamic braking power can be enough big.Experiment shows, it is a product more than the 4.5kg for capacity, also be enough to make dehydration barrel to open the back safety standard at gate and finish braking in the desired several seconds, but described electromotor winding temperature still can be in electric household dewatering machine product standard setting.
The circuit of the 3rd embodiment electric household dewatering machine is seen Fig. 3, the difference of the circuit diagram 2 of itself and the 2nd embodiment electric household dewatering machine only is: between the tie-point of the stationary contact spot film c of the moving together contact (a--c) of safety switch 3 and described motor parafacies winding 5 and capacitor 6, seal in resistance 9.This embodiment course of work and effect are except that basic identical with the 2nd embodiment, resistance 9 can be at a moment that the moving together contact (a--c) of safety switch 3 is connected, therefore the residual charge of eliminating capacitor 6 can reduce the rated capacity of safety switch 3 moving together contact (a--c) at this moment by injuries such as this contacts of moving together contact (a--c) discharge ablation.The resistance value of resistance 9 be about described motor parafacies winding 5 D.C. resistance 1/10.
The circuit of the 4th embodiment electric household dewatering machine is seen Fig. 4: the difference of the circuit diagram 3 of itself and the 3rd embodiment electric household dewatering machine is: between the tie-point of the stationary contact spot film c of the moving together contact (a--c) of safety switch 3 and described motor parafacies winding 5 and capacitor 6, what seal in is diode 11; Diode 11 and the same very identical rectification direction of the diode 8 that is parallel to break contact (a--b) for power supply; The movable contact spot film a of the break contact of safety switch 3 (a--b) and stationary contact spot film b transposition in circuit.The result is that this embodiment course of work and effect are except that basic identical with the 2nd embodiment, DC voltage puts on principal phase winding 4 and parafacies winding 5 through diode 10 and diode 11 respectively in the same way, therefore, the rated current of diode 10 and diode 11 can be selected littler, and when the action of the contact of safety switch 3, the phenomenon of the residual charge of capacitor 6 by the contact discharge can not take place.
The electromotor winding temperature limit value of various embodiments of the present invention during with the dynamic braking working method, can in product standard, stipulate with reference to requirement (seeing table 6 among the standard GB 4706.1-1998) about abnormal operating state in the national standard of electric household dewatering machine safety or the international standard.For example: to the motor of B-class insulation, can be defined as 225 ℃, or 175 ℃ with interior (working to stable state) with interior (inoperative is to stable state).As embodiment 1, because the electromotor winding temperature during with the dynamic braking working method is low especially, also can be with reference to the requirement (seeing table 3 among the standard GB 4706.1-1998) about normal operating conditions in the national standard of electric household dewatering machine safety or the international standard, the more excellent limit value of definite quality in product standard.For example:, can be that 95K is stipulated with interior by temperature rise to the motor of B-class insulation.Experiment shows, the embodiment of the invention is used the single-phase capacitor operation asyn. motor meet standard GB 9650 " laundry machine dehydration motor " and the timer 2 that meets standard GB 3665 " domestic electric washer timer ", the requirement of the electromotor winding temperature limit value in the time of can satisfying by the above-mentioned dynamic braking working method of stipulating in product standard.
Claims (4)
1, a kind of electric household dewatering machine with energy-dissipating brake circuit, comprise dehydration barrel, it when dehydration barrel turns round the gate that prevents that mechanical hazard from need close, drive the motor of dehydration barrel, the rectification circuit of dynamic braking, the timing means of control motor operation time, the supply unit of each several part power supply in machine, be subjected to the switching device of gate switching motion control: when gate is closed, enter motor, make its running from the power power supply of supply unit; When gate was opened, described switching device disconnected from the power of supply unit motor and powers, and connects rectification circuit, carries out dynamic braking; When gate was opened, described timing means was powered from the control motor and is converted to the control motor connection rectification circuit time duration of runs; It is characterized in that: even described motor is to connect described rectification circuit with the longest timing of described timing means, its winding temperature is also in electric household dewatering machine product standard setting; Described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at supply unit; One utmost point of described supply unit after this connects the tie-point of described single-phase condenser motor principal phase winding and capacitor, another utmost point connects the tie-point of break contact and moving together contact, break contact connects the common port of described single-phase condenser motor principal phase winding and parafacies winding, and the moving together contact described diode of connecting connects the tie-point of described single-phase condenser motor parafacies winding and capacitor; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, series connection is arrived another utmost point through the moving together contact of principal phase winding, parafacies winding, diode and the described switching device of described single-phase condenser motor, constitutes half-wave rectifying circuit.
2, a kind of electric household dewatering machine with energy-dissipating brake circuit, comprise dehydration barrel, it when dehydration barrel turns round the gate that prevents that mechanical hazard from need close, drive the motor of dehydration barrel, the rectification circuit of dynamic braking, the timing means of control motor operation time, the supply unit of each several part power supply in machine, be subjected to the switching device of gate switching motion control: when gate is closed, enter motor, make its running from the power power supply of supply unit; When gate was opened, described switching device disconnected from the power of supply unit motor and powers, and connects rectification circuit, carries out dynamic braking; When gate was opened, described timing means was powered from the control motor and is converted to the control motor connection rectification circuit time duration of runs; It is characterized in that: even described motor is to connect described rectification circuit with the longest timing of described timing means, its winding temperature is also in electric household dewatering machine product standard setting; Described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode, and cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device and the tie-point of moving together contact with the tie-point of capacitor, the moving together contact of described switching device connects the tie-point of described single-phase condenser motor parafacies winding and capacitor; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, through diode, make its principal phase winding circuit in parallel with the connection owing to described switching device moving together contact in the described single-phase condenser motor with the parafacies winding, to another utmost point, constitute half-wave rectifying circuit.
3, a kind of electric household dewatering machine with energy-dissipating brake circuit, comprise dehydration barrel, it when dehydration barrel turns round the gate that prevents that mechanical hazard from need close, drive the motor of dehydration barrel, the rectification circuit of dynamic braking, the timing means of control motor operation time, the supply unit of each several part power supply in machine, be subjected to the switching device of gate switching motion control: when gate is closed, enter motor, make its running from the power power supply of supply unit; When gate was opened, described switching device disconnected from the power of supply unit motor and powers, and connects rectification circuit, carries out dynamic braking; When gate was opened, described timing means was powered from the control motor and is converted to the control motor connection rectification circuit time duration of runs; It is characterized in that: even described motor is to connect described rectification circuit with the longest timing of described timing means, its winding temperature is also in electric household dewatering machine product standard setting; Described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises a diode, and cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device and the tie-point of moving together contact with the tie-point of capacitor, connect the tie-point of described single-phase condenser motor parafacies winding and capacitor behind resistance of moving together contact series connection of described switching device; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter described single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, through diode, with in the described single-phase condenser motor because the connection of described switching device moving together contact makes the circuit of its principal phase winding and the parafacies winding parallel connection of the described resistance of connecting, to another utmost point, constitute half-wave rectifying circuit.
4, a kind of electric household dewatering machine with energy-dissipating brake circuit, comprise dehydration barrel, it when dehydration barrel turns round the gate that prevents that mechanical hazard from need close, drive the motor of dehydration barrel, the rectification circuit of dynamic braking, the timing means of control motor operation time, the supply unit of each several part power supply in machine, be subjected to the switching device of gate switching motion control: when gate is closed, enter motor, make its running from the power power supply of supply unit; When gate was opened, described switching device disconnected from the power of supply unit motor and powers, and connects rectification circuit, carries out dynamic braking; When gate was opened, described timing means was powered from the control motor and is converted to the control motor connection rectification circuit time duration of runs; It is characterized in that: even described motor is to connect described rectification circuit with the longest timing of described timing means, its winding temperature is also in electric household dewatering machine product standard setting; Described motor is a single-phase condenser motor; Described switching device comprises a break contact and a moving together contact; Described rectification circuit comprises two diodes, and one of them diode cross-over connection is in the break contact of described switching device; The moving together contact that described timing means disconnects when having the operation release delay, this contact at first is series at described supply unit; One utmost point of described supply unit after this connects the break contact of described switching device and the tie-point of moving together contact, and another utmost point connects the common port of described single-phase condenser motor principal phase winding and parafacies winding; Described single-phase condenser motor principal phase winding is connected the break contact of described switching device with the tie-point of capacitor, connect the tie-point of described single-phase condenser motor parafacies winding and capacitor behind described another diode of moving together contact series connection of described switching device; Described two connections of diode in circuit are for the same very identical rectification direction of supply unit; When gate was closed, the break contact of described switching device was connected and the moving together contact disconnection, and the power power supply disconnects the supply unit of moving together contact when the described timing means of having connected is operated release delay two utmost points enter single-phase condenser motor; When gate is opened, the break contact of described switching device disconnects and the moving together contact connection, when operating release delay, the described timing means of having connected disconnects supply unit one utmost point of moving together contact, enter principal phase winding and parafacies winding in the described single-phase condenser motor through two diodes respectively, to another utmost point, constitute two tunnel half-wave rectifying circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021149062A CN100441769C (en) | 2002-02-28 | 2002-02-28 | Electric household dewatering machine with energy-dissipating brake circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021149062A CN100441769C (en) | 2002-02-28 | 2002-02-28 | Electric household dewatering machine with energy-dissipating brake circuit |
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| CN1441111A CN1441111A (en) | 2003-09-10 |
| CN100441769C true CN100441769C (en) | 2008-12-10 |
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| CN102354131A (en) * | 2011-07-22 | 2012-02-15 | 宁波乐士实业有限公司 | Suspended dewatering machine control system and control method |
| CN104278482A (en) * | 2014-09-15 | 2015-01-14 | 合肥荣事达三洋电器股份有限公司 | Door-opening power-on circuit and washing machine adopting same |
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| CN2147690Y (en) * | 1992-12-31 | 1993-11-24 | 中山市威力洗衣机厂 | Electric brake device for motor of domestic electric appliances |
| CN2171620Y (en) * | 1993-09-03 | 1994-07-13 | 吉林市松源洗衣机厂 | Dissipation braking device for dewtering motor of household washing machine |
| US5937467A (en) * | 1997-03-20 | 1999-08-17 | Samsung Electronic Co., Ltd. | Method and apparatus for braking a washing machine |
-
2002
- 2002-02-28 CN CNB021149062A patent/CN100441769C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204096U (en) * | 1987-03-26 | 1988-01-13 | 邵阳市洗衣机厂 | Motor electric brake rigging of washer and swing-dryer |
| CN2036186U (en) * | 1988-09-24 | 1989-04-19 | 沈阳飞机制造公司 | Energy consuming brake for dewaterer |
| CN2147690Y (en) * | 1992-12-31 | 1993-11-24 | 中山市威力洗衣机厂 | Electric brake device for motor of domestic electric appliances |
| CN2171620Y (en) * | 1993-09-03 | 1994-07-13 | 吉林市松源洗衣机厂 | Dissipation braking device for dewtering motor of household washing machine |
| US5937467A (en) * | 1997-03-20 | 1999-08-17 | Samsung Electronic Co., Ltd. | Method and apparatus for braking a washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1441111A (en) | 2003-09-10 |
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